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163120460 = 2258156023
BaseRepresentation
bin10011011100100…
…00010101001100
3102100221101012112
421232100111030
5313224323320
624104123152
74020333566
oct1156202514
9370841175
10163120460
11840938a8
12467664b8
1327a43ba9
1417942336
15e4c1ec5
hex9b9054c

163120460 has 12 divisors (see below), whose sum is σ = 342553008. Its totient is φ = 65248176.

The previous prime is 163120421. The next prime is 163120483. The reversal of 163120460 is 64021361.

It is a happy number.

It is a super-2 number, since 2×1631204602 = 53216568941223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077992 + ... + 4078031.

It is an arithmetic number, because the mean of its divisors is an integer number (28546084).

Almost surely, 2163120460 is an apocalyptic number.

163120460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163120460 is an abundant number, since it is smaller than the sum of its proper divisors (179432548).

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

163120460 is a wasteful number, since it uses less digits than its factorization.

163120460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8156032 (or 8156030 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 163120460 is about 12771.8620412217. The cubic root of 163120460 is about 546.3900882967.

Subtracting from 163120460 its reverse (64021361), we obtain a palindrome (99099099).

The spelling of 163120460 in words is "one hundred sixty-three million, one hundred twenty thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 8156023 16312046 32624092 40780115 81560230 163120460