64227428 has 12 divisors (see below), whose sum is σ = 119009772. Its totient is φ = 30224640.

The previous prime is 64227419. The next prime is 64227481. The reversal of 64227428 is 82472246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36264484 + 27962944 = 6022^2 + 5288^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 472193 + ... + 472328.

It is an arithmetic number, because the mean of its divisors is an integer number (9917481).

Almost surely, 2^64227428 is an apocalyptic number.

64227428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64227428 is a deficient number, since it is larger than the sum of its proper divisors (54782344).

64227428 is a wasteful number, since it uses less digits than its factorization.

64227428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944542 (or 944540 counting only the distinct ones).

The product of its digits is 43008, while the sum is 35.

The square root of 64227428 is about 8014.2016445807. The cubic root of 64227428 is about 400.4732482029.

The spelling of 64227428 in words is "sixty-four million, two hundred twenty-seven thousand, four hundred twenty-eight".