157043820 has 24 divisors (see below), whose sum is σ = 439722864. Its totient is φ = 41878336.

The previous prime is 157043813. The next prime is 157043827. The reversal of 157043820 is 28340751.

It is an interprime number because it is at equal distance from previous prime (157043813) and next prime (157043827).

It is a super-2 number, since 2×157043820² = 49325522800384800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (157043827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308639 + ... + 1308758.

It is an arithmetic number, because the mean of its divisors is an integer number (18321786).

Almost surely, 2^157043820 is an apocalyptic number.

157043820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157043820 is an abundant number, since it is smaller than the sum of its proper divisors (282679044).

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

157043820 is a wasteful number, since it uses less digits than its factorization.

157043820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617409 (or 2617407 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 157043820 is about 12531.7125725098. The cubic root of 157043820 is about 539.5192566371.

The spelling of 157043820 in words is "one hundred fifty-seven million, forty-three thousand, eight hundred twenty".