Search a number
-
+
30201200323220 = 2256820012214161
BaseRepresentation
bin1101101110111110000111…
…10100010010101010010100
310221221012120120121011220002
412313133003310102222110
512424304024240320340
6144122123452230432
76234651620045633
oct667370364225224
9127835516534802
1030201200323220
119694291269913
123479240a6b418
1313b0c65336a44
14765a62a4351a
153759087ee715
hex1b77c3d12a94

30201200323220 has 24 divisors (see below), whose sum is σ = 63422642317608. Its totient is φ = 12080456960000.

The previous prime is 30201200323213. The next prime is 30201200323249. The reversal of 30201200323220 is 2232300210203.

It can be written as a sum of positive squares in 4 ways, for example, as 11535655230724 + 18665545092496 = 3396418^2 + 4320364^2 .

It is a super-2 number, since 2×302012003232202 (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30201200323192 and 30201200323201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12532940 + ... + 14747100.

It is an arithmetic number, because the mean of its divisors is an integer number (2642610096567).

Almost surely, 230201200323220 is an apocalyptic number.

It is an amenable number.

30201200323220 is an abundant number, since it is smaller than the sum of its proper divisors (33221441994388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30201200323220 is a wasteful number, since it uses less digits than its factorization.

30201200323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896171 (or 2896169 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 30201200323220 its reverse (2232300210203), we get a palindrome (32433500533423).

The spelling of 30201200323220 in words is "thirty trillion, two hundred one billion, two hundred million, three hundred twenty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 682001 1364002 2214161 2728004 3410005 4428322 6820010 8856644 11070805 13640020 22141610 44283220 1510060016161 3020120032322 6040240064644 7550300080805 15100600161610 30201200323220