64140426 has 48 divisors (see below), whose sum is σ = 163957248. Its totient is φ = 17733600.

The previous prime is 64140403. The next prime is 64140437. The reversal of 64140426 is 62404146.

64140426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64140426² = 8227988494922952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64140426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4305 + ... + 12116.

It is an arithmetic number, because the mean of its divisors is an integer number (3415776).

Almost surely, 2^64140426 is an apocalyptic number.

64140426 is an abundant number, since it is smaller than the sum of its proper divisors (99816822).

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

64140426 is a wasteful number, since it uses less digits than its factorization.

64140426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16467 (or 16464 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64140426 is about 8008.7718159528. The cubic root of 64140426 is about 400.2923404573.

The spelling of 64140426 in words is "sixty-four million, one hundred forty thousand, four hundred twenty-six".