290021468 has 24 divisors (see below), whose sum is σ = 554964480. Its totient is φ = 131521520.

The previous prime is 290021441. The next prime is 290021507. The reversal of 290021468 is 864120092.

It is a super-2 number, since 2×290021468² = 168224903801750048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12053 + ... + 26931.

It is an arithmetic number, because the mean of its divisors is an integer number (23123520).

Almost surely, 2^290021468 is an apocalyptic number.

It is an amenable number.

290021468 is a deficient number, since it is larger than the sum of its proper divisors (264943012).

290021468 is a wasteful number, since it uses less digits than its factorization.

290021468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15337 (or 15335 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 290021468 is about 17030.0166764452. The cubic root of 290021468 is about 661.9269276141.

The spelling of 290021468 in words is "two hundred ninety million, twenty-one thousand, four hundred sixty-eight".