157145780 has 48 divisors (see below), whose sum is σ = 372435840. Its totient is φ = 55171200.

The previous prime is 157145749. The next prime is 157145783. The reversal of 157145780 is 87541751.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157145783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5936 + ... + 18695.

It is an arithmetic number, because the mean of its divisors is an integer number (7759080).

Almost surely, 2^157145780 is an apocalyptic number.

157145780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157145780 is an abundant number, since it is smaller than the sum of its proper divisors (215290060).

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

157145780 is a wasteful number, since it uses less digits than its factorization.

157145780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24680 (or 24678 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 157145780 is about 12535.7799916878. The cubic root of 157145780 is about 539.6359915349.

The spelling of 157145780 in words is "one hundred fifty-seven million, one hundred forty-five thousand, seven hundred eighty".