157399680 has 128 divisors (see below), whose sum is σ = 509037120. Its totient is φ = 41361408.

The previous prime is 157399637. The next prime is 157399709. The reversal of 157399680 is 86993751.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 139599 + ... + 140721.

Almost surely, 2^157399680 is an apocalyptic number.

157399680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157399680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254518560).

157399680 is an abundant number, since it is smaller than the sum of its proper divisors (351637440).

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

157399680 is a wasteful number, since it uses less digits than its factorization.

157399680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 157399680 is about 12545.9029168888. The cubic root of 157399680 is about 539.9264646094.

The spelling of 157399680 in words is "one hundred fifty-seven million, three hundred ninety-nine thousand, six hundred eighty".