151580820 has 48 divisors (see below), whose sum is σ = 425194560. Its totient is φ = 40348416.

The previous prime is 151580783. The next prime is 151580827. The reversal of 151580820 is 28085151.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151580827) 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, 36616 + ... + 40544.

It is an arithmetic number, because the mean of its divisors is an integer number (8858220).

Almost surely, 2^151580820 is an apocalyptic number.

151580820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151580820 is an abundant number, since it is smaller than the sum of its proper divisors (273613740).

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

151580820 is a wasteful number, since it uses less digits than its factorization.

151580820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584 (or 4582 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 151580820 is about 12311.8162754323. The cubic root of 151580820 is about 533.1892900932.

The spelling of 151580820 in words is "one hundred fifty-one million, five hundred eighty thousand, eight hundred twenty".