64264438 has 32 divisors (see below), whose sum is σ = 116075520. Its totient is φ = 26088480.

The previous prime is 64264423. The next prime is 64264531. The reversal of 64264438 is 83446246.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64264397 and 64264406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34183 + ... + 36013.

It is an arithmetic number, because the mean of its divisors is an integer number (3627360).

Almost surely, 2^64264438 is an apocalyptic number.

64264438 is a deficient number, since it is larger than the sum of its proper divisors (51811082).

64264438 is a wasteful number, since it uses less digits than its factorization.

64264438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its digits is 110592, while the sum is 37.

The square root of 64264438 is about 8016.5103380461. The cubic root of 64264438 is about 400.5501554755.

The spelling of 64264438 in words is "sixty-four million, two hundred sixty-four thousand, four hundred thirty-eight".