64219228 has 24 divisors (see below), whose sum is σ = 116340224. Its totient is φ = 30985200.

The previous prime is 64219223. The next prime is 64219247. The reversal of 64219228 is 82291246.

It is a junction number, because it is equal to n+sod(n) for n = 64219193 and 64219202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64219223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70351 + ... + 71257.

Almost surely, 2^64219228 is an apocalyptic number.

It is an amenable number.

64219228 is a deficient number, since it is larger than the sum of its proper divisors (52120996).

64219228 is a wasteful number, since it uses less digits than its factorization.

64219228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513 (or 1511 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 64219228 is about 8013.6900364314. The cubic root of 64219228 is about 400.4562044958.

The spelling of 64219228 in words is "sixty-four million, two hundred nineteen thousand, two hundred twenty-eight".