290288972 has 6 divisors (see below), whose sum is σ = 508005708. Its totient is φ = 145144484.

The previous prime is 290288959. The next prime is 290288981. The reversal of 290288972 is 279882092.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36286118 + ... + 36286125.

It is an arithmetic number, because the mean of its divisors is an integer number (84667618).

Almost surely, 2^290288972 is an apocalyptic number.

It is an amenable number.

290288972 is a deficient number, since it is larger than the sum of its proper divisors (217716736).

290288972 is a wasteful number, since it uses less digits than its factorization.

290288972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72572247 (or 72572245 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 290288972 is about 17037.8687634340. The cubic root of 290288972 is about 662.1303765632.

The spelling of 290288972 in words is "two hundred ninety million, two hundred eighty-eight thousand, nine hundred seventy-two".