247572228 has 12 divisors (see below), whose sum is σ = 577668560. Its totient is φ = 82524072.

The previous prime is 247572211. The next prime is 247572229. The reversal of 247572228 is 822275742.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×247572228² = 122584016153767968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247572229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10315498 + ... + 10315521.

Almost surely, 2^247572228 is an apocalyptic number.

It is an amenable number.

247572228 is an abundant number, since it is smaller than the sum of its proper divisors (330096332).

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

247572228 is a wasteful number, since it uses less digits than its factorization.

247572228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20631026 (or 20631024 counting only the distinct ones).

The product of its digits is 125440, while the sum is 39.

The square root of 247572228 is about 15734.4281116283. The cubic root of 247572228 is about 627.9146874522.

The spelling of 247572228 in words is "two hundred forty-seven million, five hundred seventy-two thousand, two hundred twenty-eight".