90070228 has 12 divisors (see below), whose sum is σ = 158064480. Its totient is φ = 44908952.

The previous prime is 90070219. The next prime is 90070237. The reversal of 90070228 is 82207009.

It is an interprime number because it is at equal distance from previous prime (90070219) and next prime (90070237).

It is a super-2 number, since 2×90070228² = 16225291943943968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90070196 and 90070205.

It is a congruent 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, 29926 + ... + 32797.

It is an arithmetic number, because the mean of its divisors is an integer number (13172040).

Almost surely, 2^90070228 is an apocalyptic number.

It is an amenable number.

90070228 is a deficient number, since it is larger than the sum of its proper divisors (67994252).

90070228 is a wasteful number, since it uses less digits than its factorization.

90070228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63086 (or 63084 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 90070228 is about 9490.5335993294. The cubic root of 90070228 is about 448.2570073476.

The spelling of 90070228 in words is "ninety million, seventy thousand, two hundred twenty-eight".