157703840 has 96 divisors (see below), whose sum is σ = 429287040. Its totient is φ = 53627904.

The previous prime is 157703839. The next prime is 157703867. The reversal of 157703840 is 48307751.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 157703840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155174 + ... + 156186.

It is an arithmetic number, because the mean of its divisors is an integer number (4471740).

Almost surely, 2^157703840 is an apocalyptic number.

157703840 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 157703840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214643520).

157703840 is an abundant number, since it is smaller than the sum of its proper divisors (271583200).

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

157703840 is a wasteful number, since it uses less digits than its factorization.

157703840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 157703840 is about 12558.0189520481. The cubic root of 157703840 is about 540.2740264436.

The spelling of 157703840 in words is "one hundred fifty-seven million, seven hundred three thousand, eight hundred forty".