157781204 has 12 divisors (see below), whose sum is σ = 315562464. Its totient is φ = 67620504.

The previous prime is 157781189. The next prime is 157781207. The reversal of 157781204 is 402187751.

157781204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

157781204 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157781207) 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, 2817494 + ... + 2817549.

It is an arithmetic number, because the mean of its divisors is an integer number (26296872).

Almost surely, 2^157781204 is an apocalyptic number.

157781204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

157781204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

157781204 is a wasteful number, since it uses less digits than its factorization.

157781204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635054 (or 5635052 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 157781204 is about 12561.0988372833. The cubic root of 157781204 is about 540.3623585281.

The spelling of 157781204 in words is "one hundred fifty-seven million, seven hundred eighty-one thousand, two hundred four".