90640122 has 16 divisors (see below), whose sum is σ = 182193600. Its totient is φ = 30061152.

The previous prime is 90640117. The next prime is 90640139. The reversal of 90640122 is 22104609.

It is a junction number, because it is equal to n+sod(n) for n = 90640092 and 90640101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36763 + ... + 39150.

It is an arithmetic number, because the mean of its divisors is an integer number (11387100).

Almost surely, 2^90640122 is an apocalyptic number.

90640122 is an abundant number, since it is smaller than the sum of its proper divisors (91553478).

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

90640122 is a wasteful number, since it uses less digits than its factorization.

90640122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76117.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 90640122 is about 9520.5105955511. The cubic root of 90640122 is about 449.2004270508.

The spelling of 90640122 in words is "ninety million, six hundred forty thousand, one hundred twenty-two".