64282890 has 64 divisors (see below), whose sum is σ = 185610240. Its totient is φ = 13919040.

The previous prime is 64282877. The next prime is 64282891. The reversal of 64282890 is 9828246.

It is not an unprimeable number, because it can be changed into a prime (64282891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4066 + ... + 12045.

It is an arithmetic number, because the mean of its divisors is an integer number (2900160).

Almost surely, 2^64282890 is an apocalyptic number.

64282890 is an abundant number, since it is smaller than the sum of its proper divisors (121327350).

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

64282890 is a wasteful number, since it uses less digits than its factorization.

64282890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16147.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 64282890 is about 8017.6611302798. The cubic root of 64282890 is about 400.5884879469.

The spelling of 64282890 in words is "sixty-four million, two hundred eighty-two thousand, eight hundred ninety".