157806464 has 32 divisors (see below), whose sum is σ = 316710000. Its totient is φ = 78318592.

The previous prime is 157806463. The next prime is 157806497. The reversal of 157806464 is 464608751.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157806463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13037 + ... + 22035.

Almost surely, 2^157806464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157806464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158355000).

157806464 is an abundant number, since it is smaller than the sum of its proper divisors (158903536).

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

157806464 is an equidigital number, since it uses as much as digits as its factorization.

157806464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150 (or 9138 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 157806464 is about 12562.1042823247. The cubic root of 157806464 is about 540.3911934474.

The spelling of 157806464 in words is "one hundred fifty-seven million, eight hundred six thousand, four hundred sixty-four".