157764340 has 12 divisors (see below), whose sum is σ = 331305156. Its totient is φ = 63105728.

The previous prime is 157764317. The next prime is 157764349. The reversal of 157764340 is 43467751.

It can be written as a sum of positive squares in 2 ways, for example, as 98843364 + 58920976 = 9942^2 + 7676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157764340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157764349) 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, 3944089 + ... + 3944128.

It is an arithmetic number, because the mean of its divisors is an integer number (27608763).

Almost surely, 2^157764340 is an apocalyptic number.

157764340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157764340 is an abundant number, since it is smaller than the sum of its proper divisors (173540816).

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

157764340 is a wasteful number, since it uses less digits than its factorization.

157764340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888226 (or 7888224 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 157764340 is about 12560.4275404940. The cubic root of 157764340 is about 540.3431061388.

The spelling of 157764340 in words is "one hundred fifty-seven million, seven hundred sixty-four thousand, three hundred forty".