264642078 has 16 divisors (see below), whose sum is σ = 533149200. Its totient is φ = 87569856.

The previous prime is 264642067. The next prime is 264642109. The reversal of 264642078 is 870246462.

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, 160153 + ... + 161796.

It is an arithmetic number, because the mean of its divisors is an integer number (33321825).

Almost surely, 2^264642078 is an apocalyptic number.

264642078 is an abundant number, since it is smaller than the sum of its proper divisors (268507122).

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

264642078 is a wasteful number, since it uses less digits than its factorization.

264642078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322091.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 264642078 is about 16267.8233946647. The cubic root of 264642078 is about 642.0265174750.

The spelling of 264642078 in words is "two hundred sixty-four million, six hundred forty-two thousand, seventy-eight".