290504928 has 72 divisors (see below), whose sum is σ = 887091912. Its totient is φ = 83000064.

The previous prime is 290504923. The next prime is 290504939. The reversal of 290504928 is 829405092.

It is a super-2 number, since 2×290504928² = 168786226384570368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290504923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26175 + ... + 35582.

It is an arithmetic number, because the mean of its divisors is an integer number (12320721).

Almost surely, 2^290504928 is an apocalyptic number.

290504928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

290504928 is an abundant number, since it is smaller than the sum of its proper divisors (596586984).

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

290504928 is a wasteful number, since it uses less digits than its factorization.

290504928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61784 (or 61769 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 290504928 is about 17044.2051149357. The cubic root of 290504928 is about 662.2945297546.

The spelling of 290504928 in words is "two hundred ninety million, five hundred four thousand, nine hundred twenty-eight".