161624976 has 40 divisors (see below), whose sum is σ = 418333344. Its totient is φ = 53771520.

The previous prime is 161624951. The next prime is 161624977. The reversal of 161624976 is 679426161.

It is a super-2 number, since 2×161624976² = 52245265734001152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161624977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24460 + ... + 30356.

Almost surely, 2^161624976 is an apocalyptic number.

161624976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161624976 is an abundant number, since it is smaller than the sum of its proper divisors (256708368).

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

161624976 is a wasteful number, since it uses less digits than its factorization.

161624976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479 (or 6473 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 161624976 is about 12713.1811911889. The cubic root of 161624976 is about 544.7151961428.

The spelling of 161624976 in words is "one hundred sixty-one million, six hundred twenty-four thousand, nine hundred seventy-six".