90424226128 has 20 divisors (see below), whose sum is σ = 176086268820. Its totient is φ = 44982608384.

The previous prime is 90424226107. The next prime is 90424226147. The reversal of 90424226128 is 82162242409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49921858624 + 40502367504 = 223432^2 + 201252^2 .

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, 14340793 + ... + 14347096.

It is an arithmetic number, because the mean of its divisors is an integer number (8804313441).

Almost surely, 2^90424226128 is an apocalyptic number.

It is an amenable number.

90424226128 is a deficient number, since it is larger than the sum of its proper divisors (85662042692).

90424226128 is a wasteful number, since it uses less digits than its factorization.

90424226128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28688094 (or 28688088 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 90424226128 in words is "ninety billion, four hundred twenty-four million, two hundred twenty-six thousand, one hundred twenty-eight".