157256340 has 24 divisors (see below), whose sum is σ = 440317920. Its totient is φ = 41935008.

The previous prime is 157256321. The next prime is 157256347. The reversal of 157256340 is 43652751.

157256340 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157256347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310410 + ... + 1310529.

It is an arithmetic number, because the mean of its divisors is an integer number (18346580).

Almost surely, 2^157256340 is an apocalyptic number.

157256340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157256340 is an abundant number, since it is smaller than the sum of its proper divisors (283061580).

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

157256340 is a wasteful number, since it uses less digits than its factorization.

157256340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620951 (or 2620949 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 157256340 is about 12540.1889937911. The cubic root of 157256340 is about 539.7625156004.

The spelling of 157256340 in words is "one hundred fifty-seven million, two hundred fifty-six thousand, three hundred forty".