290538864 has 120 divisors (see below), whose sum is σ = 1013780352. Its totient is φ = 75461760.

The previous prime is 290538863. The next prime is 290538869. The reversal of 290538864 is 468835092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290538863) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2014 + ... + 24189.

Almost surely, 2^290538864 is an apocalyptic number.

290538864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290538864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506890176).

290538864 is an abundant number, since it is smaller than the sum of its proper divisors (723241488).

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

290538864 is a wasteful number, since it uses less digits than its factorization.

290538864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26235 (or 26226 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 290538864 is about 17045.2006148358. The cubic root of 290538864 is about 662.3203179024.

The spelling of 290538864 in words is "two hundred ninety million, five hundred thirty-eight thousand, eight hundred sixty-four".