264027820 has 24 divisors (see below), whose sum is σ = 633667104. Its totient is φ = 90523776.

The previous prime is 264027779. The next prime is 264027839. The reversal of 264027820 is 28720462.

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 7 ways as a sum of consecutive naturals, for example, 942817 + ... + 943096.

It is an arithmetic number, because the mean of its divisors is an integer number (26402796).

Almost surely, 2^264027820 is an apocalyptic number.

264027820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264027820 is an abundant number, since it is smaller than the sum of its proper divisors (369639284).

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

264027820 is a wasteful number, since it uses less digits than its factorization.

264027820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885929 (or 1885927 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 264027820 is about 16248.9328880391. The cubic root of 264027820 is about 641.5293989463.

The spelling of 264027820 in words is "two hundred sixty-four million, twenty-seven thousand, eight hundred twenty".