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10302253220 = 2257397185359
BaseRepresentation
bin10011001100000111…
…11110100010100100
3222120222111200121002
421212003332202210
5132044334100340
64422141012432
7513204464450
oct114603764244
928528450532
1010302253220
114407398366
121bb6254118
13c824c6a2c
146da361660
154046b4715
hex2660fe8a4

10302253220 has 48 divisors (see below), whose sum is σ = 24787822080. Its totient is φ = 3523284864.

The previous prime is 10302253201. The next prime is 10302253237. The reversal of 10302253220 is 2235220301.

It is a super-2 number, since 2×103022532202 (a number of 21 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 = 10302253192 and 10302253201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37100 + ... + 148259.

It is an arithmetic number, because the mean of its divisors is an integer number (516412960).

Almost surely, 210302253220 is an apocalyptic number.

10302253220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10302253220 is an abundant number, since it is smaller than the sum of its proper divisors (14485568860).

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

10302253220 is a wasteful number, since it uses less digits than its factorization.

10302253220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185772 (or 185770 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 10302253220 its reverse (2235220301), we get a palindrome (12537473521).

The spelling of 10302253220 in words is "ten billion, three hundred two million, two hundred fifty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 397 794 1588 1985 2779 3970 5558 7940 11116 13895 27790 55580 185359 370718 741436 926795 1297513 1853590 2595026 3707180 5190052 6487565 12975130 25950260 73587523 147175046 294350092 367937615 515112661 735875230 1030225322 1471750460 2060450644 2575563305 5151126610 10302253220