264272978 has 4 divisors (see below), whose sum is σ = 396409470. Its totient is φ = 132136488.

The previous prime is 264272959. The next prime is 264273001. The reversal of 264272978 is 879272462.

264272978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 256416169 + 7856809 = 16013^2 + 2803^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66068243 + ... + 66068246.

Almost surely, 2^264272978 is an apocalyptic number.

264272978 is a deficient number, since it is larger than the sum of its proper divisors (132136492).

264272978 is a wasteful number, since it uses less digits than its factorization.

264272978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132136491.

The product of its digits is 677376, while the sum is 47.

The square root of 264272978 is about 16256.4749561521. The cubic root of 264272978 is about 641.7278974870.

The spelling of 264272978 in words is "two hundred sixty-four million, two hundred seventy-two thousand, nine hundred seventy-eight".