264498990 has 64 divisors (see below), whose sum is σ = 728262144. Its totient is φ = 60225408.

The previous prime is 264498979. The next prime is 264499007. The reversal of 264498990 is 99894462.

It is a happy number.

It is a super-2 number, since 2×264498990² = 139919431422040200, 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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55897 + ... + 60443.

It is an arithmetic number, because the mean of its divisors is an integer number (11379096).

Almost surely, 2^264498990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264498990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364131072).

264498990 is an abundant number, since it is smaller than the sum of its proper divisors (463763154).

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

264498990 is a wasteful number, since it uses less digits than its factorization.

264498990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 264498990 is about 16263.4249160501. The cubic root of 264498990 is about 641.9107852466.

The spelling of 264498990 in words is "two hundred sixty-four million, four hundred ninety-eight thousand, nine hundred ninety".