151621680 has 120 divisors (see below), whose sum is σ = 546808752. Its totient is φ = 34653696.

The previous prime is 151621663. The next prime is 151621703. The reversal of 151621680 is 86126151.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5314 + ... + 18206.

Almost surely, 2^151621680 is an apocalyptic number.

151621680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151621680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273404376).

151621680 is an abundant number, since it is smaller than the sum of its proper divisors (395187072).

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

151621680 is a wasteful number, since it uses less digits than its factorization.

151621680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12923 (or 12910 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 151621680 is about 12313.4755451091. The cubic root of 151621680 is about 533.2371944766.

The spelling of 151621680 in words is "one hundred fifty-one million, six hundred twenty-one thousand, six hundred eighty".