90220626 has 24 divisors (see below), whose sum is σ = 205767120. Its totient is φ = 28490616.

The previous prime is 90220619. The next prime is 90220639. The reversal of 90220626 is 62602209.

It is a super-2 number, since 2×90220626² = 16279522711663752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90220626.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131560 + ... + 132243.

It is an arithmetic number, because the mean of its divisors is an integer number (8573630).

Almost surely, 2^90220626 is an apocalyptic number.

90220626 is an abundant number, since it is smaller than the sum of its proper divisors (115546494).

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

90220626 is a wasteful number, since it uses less digits than its factorization.

90220626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263830 (or 263827 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 90220626 is about 9498.4538741839. The cubic root of 90220626 is about 448.5063663559.

It can be divided in two parts, 902 and 20626, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 90220626 in words is "ninety million, two hundred twenty thousand, six hundred twenty-six".