151899840 has 112 divisors (see below), whose sum is σ = 535899360. Its totient is φ = 40504320.

The previous prime is 151899833. The next prime is 151899899. The reversal of 151899840 is 48998151.

151899840 is a `hidden beast` number, since 1 + 518 + 9 + 98 + 40 = 666.

It is a super-2 number, since 2×151899840² = 46147122784051200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151 + ... + 17430.

Almost surely, 2^151899840 is an apocalyptic number.

151899840 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 151899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267949680).

151899840 is an abundant number, since it is smaller than the sum of its proper divisors (383999520).

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

151899840 is a wasteful number, since it uses less digits than its factorization.

151899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17607 (or 17591 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 151899840 is about 12324.7653121672. The cubic root of 151899840 is about 533.5630815709.

The spelling of 151899840 in words is "one hundred fifty-one million, eight hundred ninety-nine thousand, eight hundred forty".