152840 has 16 divisors (see below), whose sum is σ = 343980. Its totient is φ = 61120.

The previous prime is 152839. The next prime is 152843. The reversal of 152840 is 48251.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 3844 = 386^2 + 62^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (152843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871 + ... + 1950.

2¹⁵²⁸⁴⁰ is an apocalyptic number.

152840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152840 is an abundant number, since it is smaller than the sum of its proper divisors (191140).

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

152840 is a wasteful number, since it uses less digits than its factorization.

152840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832 (or 3828 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 152840 is about 390.9475668168. The cubic root of 152840 is about 53.4661619663.

The spelling of 152840 in words is "one hundred fifty-two thousand, eight hundred forty".