64428460 has 12 divisors (see below), whose sum is σ = 135299808. Its totient is φ = 25771376.

The previous prime is 64428409. The next prime is 64428499. The reversal of 64428460 is 6482446.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610692 + ... + 1610731.

It is an arithmetic number, because the mean of its divisors is an integer number (11274984).

Almost surely, 2^64428460 is an apocalyptic number.

It is an amenable number.

64428460 is an abundant number, since it is smaller than the sum of its proper divisors (70871348).

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

64428460 is a wasteful number, since it uses less digits than its factorization.

64428460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221432 (or 3221430 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 64428460 is about 8026.7340805585. The cubic root of 64428460 is about 400.8906404272.

The spelling of 64428460 in words is "sixty-four million, four hundred twenty-eight thousand, four hundred sixty".