290040 has 32 divisors (see below), whose sum is σ = 870480. Its totient is φ = 77312.

The previous prime is 290039. The next prime is 290041. The reversal of 290040 is 40092.

290040 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (290039) and next prime (290041).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089 + ... + 1328.

2²⁹⁰⁰⁴⁰ is an apocalyptic number.

290040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290040 is an abundant number, since it is smaller than the sum of its proper divisors (580440).

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

290040 is a wasteful number, since it uses less digits than its factorization.

290040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 290040 is about 538.5536185005. The cubic root of 290040 is about 66.1941026075.

The spelling of 290040 in words is "two hundred ninety thousand, forty".