Search a number
-
+
23201115330720 = 2535293850143291
BaseRepresentation
bin1010100011001111011100…
…01111001101100010100000
310001011000010121201010201110
411101213232033031202200
511020111341011040340
6121202240101103320
74613140160260035
oct521475617154240
9101130117633643
1023201115330720
1174355a0830438
1227286466b7b40
13cc3b182207c2
145a2d2340538c
152a37aa912680
hex1519ee3cd8a0

23201115330720 has 192 divisors, whose sum is σ = 75607344570240. Its totient is φ = 5973327360000.

The previous prime is 23201115330677. The next prime is 23201115330733. The reversal of 23201115330720 is 2703351110232.

It is a super-2 number, since 2×232011153307202 (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 535912275 + ... + 535955565.

It is an arithmetic number, because the mean of its divisors is an integer number (393788252970).

Almost surely, 223201115330720 is an apocalyptic number.

23201115330720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23201115330720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37803672285120).

23201115330720 is an abundant number, since it is smaller than the sum of its proper divisors (52406229239520).

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

23201115330720 is a wasteful number, since it uses less digits than its factorization.

23201115330720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81839 (or 81831 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

Adding to 23201115330720 its reverse (2703351110232), we get a palindrome (25904466440952).

The spelling of 23201115330720 in words is "twenty-three trillion, two hundred one billion, one hundred fifteen million, three hundred thirty thousand, seven hundred twenty".