90928212 has 12 divisors (see below), whose sum is σ = 212165856. Its totient is φ = 30309400.

The previous prime is 90928199. The next prime is 90928219. The reversal of 90928212 is 21282909.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90928219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3788664 + ... + 3788687.

It is an arithmetic number, because the mean of its divisors is an integer number (17680488).

Almost surely, 2^90928212 is an apocalyptic number.

It is an amenable number.

90928212 is an abundant number, since it is smaller than the sum of its proper divisors (121237644).

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

90928212 is a wasteful number, since it uses less digits than its factorization.

90928212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7577358 (or 7577356 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 90928212 is about 9535.6285582021. The cubic root of 90928212 is about 449.6758356752.

The spelling of 90928212 in words is "ninety million, nine hundred twenty-eight thousand, two hundred twelve".