290693332 has 18 divisors (see below), whose sum is σ = 526866158. Its totient is φ = 140333088.

The previous prime is 290693329. The next prime is 290693339. The reversal of 290693332 is 233396092.

It can be written as a sum of positive squares in 3 ways, for example, as 72658576 + 218034756 = 8524^2 + 14766^2 .

It is a super-2 number, since 2×290693332² = 169005226538524448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 290693291 and 290693300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290693339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39843 + ... + 46570.

Almost surely, 2^290693332 is an apocalyptic number.

It is an amenable number.

290693332 is a deficient number, since it is larger than the sum of its proper divisors (236172826).

290693332 is a wasteful number, since it uses less digits than its factorization.

290693332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86475 (or 86444 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 290693332 is about 17049.7311415752. The cubic root of 290693332 is about 662.4376735955.

The spelling of 290693332 in words is "two hundred ninety million, six hundred ninety-three thousand, three hundred thirty-two".