64402442 has 16 divisors (see below), whose sum is σ = 104187552. Its totient is φ = 29680560.

The previous prime is 64402427. The next prime is 64402463. The reversal of 64402442 is 24420446.

64402442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 7 ways as a sum of consecutive naturals, for example, 22217 + ... + 24947.

It is an arithmetic number, because the mean of its divisors is an integer number (6511722).

Almost surely, 2^64402442 is an apocalyptic number.

64402442 is a deficient number, since it is larger than the sum of its proper divisors (39785110).

64402442 is a wasteful number, since it uses less digits than its factorization.

64402442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 64402442 is about 8025.1132079242. The cubic root of 64402442 is about 400.8366695732.

Adding to 64402442 its reverse (24420446), we get a palindrome (88822888).

The spelling of 64402442 in words is "sixty-four million, four hundred two thousand, four hundred forty-two".