64222228 has 24 divisors (see below), whose sum is σ = 128822400. Its totient is φ = 27442848.

The previous prime is 64222219. The next prime is 64222229. The reversal of 64222228 is 82222246.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 64222196 and 64222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64222229) 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, 6858 + ... + 13246.

It is an arithmetic number, because the mean of its divisors is an integer number (5367600).

Almost surely, 2^64222228 is an apocalyptic number.

It is an amenable number.

64222228 is an abundant number, since it is smaller than the sum of its proper divisors (64600172).

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

64222228 is a wasteful number, since it uses less digits than its factorization.

64222228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6759 (or 6757 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 64222228 is about 8013.8772139333. The cubic root of 64222228 is about 400.4624401667.

The spelling of 64222228 in words is "sixty-four million, two hundred twenty-two thousand, two hundred twenty-eight".