90197104 has 80 divisors (see below), whose sum is σ = 201415680. Its totient is φ = 38845440.

The previous prime is 90197077. The next prime is 90197111. The reversal of 90197104 is 40179109.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159927 + ... + 160489.

It is an arithmetic number, because the mean of its divisors is an integer number (2517696).

Almost surely, 2^90197104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90197104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100707840).

90197104 is an abundant number, since it is smaller than the sum of its proper divisors (111218576).

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

90197104 is a wasteful number, since it uses less digits than its factorization.

90197104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 90197104 is about 9497.2155919511. The cubic root of 90197104 is about 448.4673853077.

The spelling of 90197104 in words is "ninety million, one hundred ninety-seven thousand, one hundred four".