157386820 has 24 divisors (see below), whose sum is σ = 330793344. Its totient is φ = 62901216.

The previous prime is 157386809. The next prime is 157386821. The reversal of 157386820 is 28683751.

It is a super-2 number, since 2×157386820² = 49541222219424800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157386821) 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, 27877 + ... + 33043.

It is an arithmetic number, because the mean of its divisors is an integer number (13783056).

Almost surely, 2^157386820 is an apocalyptic number.

157386820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157386820 is an abundant number, since it is smaller than the sum of its proper divisors (173406524).

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

157386820 is a wasteful number, since it uses less digits than its factorization.

157386820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6699 (or 6697 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 157386820 is about 12545.3903885053. The cubic root of 157386820 is about 539.9117597014.

The spelling of 157386820 in words is "one hundred fifty-seven million, three hundred eighty-six thousand, eight hundred twenty".