152991378 has 24 divisors (see below), whose sum is σ = 334419228. Its totient is φ = 50545152.

The previous prime is 152991367. The next prime is 152991403. The reversal of 152991378 is 873199251.

152991378 is a `hidden beast` number, since 1 + 529 + 91 + 37 + 8 = 666.

152991378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 104591529 + 48399849 = 10227^2 + 6957^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35575 + ... + 39642.

Almost surely, 2^152991378 is an apocalyptic number.

152991378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

152991378 is an abundant number, since it is smaller than the sum of its proper divisors (181427850).

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

152991378 is a wasteful number, since it uses less digits than its factorization.

152991378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75338 (or 75335 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 152991378 is about 12368.9683482496. The cubic root of 152991378 is about 534.8380771802.

The spelling of 152991378 in words is "one hundred fifty-two million, nine hundred ninety-one thousand, three hundred seventy-eight".