290433972 has 48 divisors (see below), whose sum is σ = 712397952. Its totient is φ = 91914240.

The previous prime is 290433959. The next prime is 290433991. The reversal of 290433972 is 279334092.

It is a self number, because there is not a number n which added to its sum of digits gives 290433972.

It is a congruent number.

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, 33972 + ... + 41652.

It is an arithmetic number, because the mean of its divisors is an integer number (14841624).

Almost surely, 2^290433972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290433972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356198976).

290433972 is an abundant number, since it is smaller than the sum of its proper divisors (421963980).

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

290433972 is a wasteful number, since it uses less digits than its factorization.

290433972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848 (or 7846 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 290433972 is about 17042.1234592406. The cubic root of 290433972 is about 662.2406034207.

The spelling of 290433972 in words is "two hundred ninety million, four hundred thirty-three thousand, nine hundred seventy-two".