157646380 has 24 divisors (see below), whose sum is σ = 337306032. Its totient is φ = 61868352.

The previous prime is 157646371. The next prime is 157646399. The reversal of 157646380 is 83646751.

It is a happy number.

It is a super-2 number, since 2×157646380² = 49704762254208800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 73302 + ... + 75421.

It is an arithmetic number, because the mean of its divisors is an integer number (14054418).

Almost surely, 2^157646380 is an apocalyptic number.

157646380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157646380 is an abundant number, since it is smaller than the sum of its proper divisors (179659652).

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

157646380 is a wasteful number, since it uses less digits than its factorization.

157646380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148785 (or 148783 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 157646380 is about 12555.7309623932. The cubic root of 157646380 is about 540.2084015003.

The spelling of 157646380 in words is "one hundred fifty-seven million, six hundred forty-six thousand, three hundred eighty".