157798040 has 32 divisors (see below), whose sum is σ = 373734000. Its totient is φ = 59796864.

The previous prime is 157798027. The next prime is 157798061. The reversal of 157798040 is 40897751.

It is a congruent number.

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, 103055 + ... + 104574.

Almost surely, 2^157798040 is an apocalyptic number.

157798040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157798040 is an abundant number, since it is smaller than the sum of its proper divisors (215935960).

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

157798040 is a wasteful number, since it uses less digits than its factorization.

157798040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207659 (or 207655 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 157798040 is about 12561.7689837061. The cubic root of 157798040 is about 540.3815775835.

The spelling of 157798040 in words is "one hundred fifty-seven million, seven hundred ninety-eight thousand, forty".