264121280 has 56 divisors (see below), whose sum is σ = 662056080. Its totient is φ = 100085760.

The previous prime is 264121243. The next prime is 264121301. The reversal of 264121280 is 82121462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15641 + ... + 27800.

It is an arithmetic number, because the mean of its divisors is an integer number (11822430).

Almost surely, 2^264121280 is an apocalyptic number.

264121280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264121280 is an abundant number, since it is smaller than the sum of its proper divisors (397934800).

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

264121280 is a wasteful number, since it uses less digits than its factorization.

264121280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43477 (or 43467 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 264121280 is about 16251.8085147469. The cubic root of 264121280 is about 641.6050857490.

The spelling of 264121280 in words is "two hundred sixty-four million, one hundred twenty-one thousand, two hundred eighty".