290327940 has 108 divisors (see below), whose sum is σ = 1024473996. Its totient is φ = 66358656.

The previous prime is 290327897. The next prime is 290327953. The reversal of 290327940 is 49723092.

290327940 is a `hidden beast` number, since 290 + 327 + 9 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 130507776 + 159820164 = 11424^2 + 12642^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 290327895 and 290327904.

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 35 ways as a sum of consecutive naturals, for example, 7639 + ... + 25278.

Almost surely, 2^290327940 is an apocalyptic number.

290327940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290327940 is an abundant number, since it is smaller than the sum of its proper divisors (734146056).

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

290327940 is a wasteful number, since it uses less digits than its factorization.

290327940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32946 (or 32934 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 290327940 is about 17039.0122953181. The cubic root of 290327940 is about 662.1600030671.

The spelling of 290327940 in words is "two hundred ninety million, three hundred twenty-seven thousand, nine hundred forty".