264290978 has 24 divisors (see below), whose sum is σ = 469252992. Its totient is φ = 109356912.

The previous prime is 264290977. The next prime is 264290989. The reversal of 264290978 is 879092462.

It is not an unprimeable number, because it can be changed into a prime (264290977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551 + ... + 22997.

It is an arithmetic number, because the mean of its divisors is an integer number (19552208).

Almost surely, 2^264290978 is an apocalyptic number.

264290978 is a deficient number, since it is larger than the sum of its proper divisors (204962014).

264290978 is a wasteful number, since it uses less digits than its factorization.

264290978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22514 (or 22485 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 264290978 is about 16257.0285722822. The cubic root of 264290978 is about 641.7424668161.

The spelling of 264290978 in words is "two hundred sixty-four million, two hundred ninety thousand, nine hundred seventy-eight".