90728910 has 48 divisors (see below), whose sum is σ = 244638576. Its totient is φ = 24193728.

The previous prime is 90728867. The next prime is 90728917. The reversal of 90728910 is 1982709.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90728917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16239 + ... + 21098.

It is an arithmetic number, because the mean of its divisors is an integer number (5096637).

Almost surely, 2^90728910 is an apocalyptic number.

90728910 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

90728910 is an abundant number, since it is smaller than the sum of its proper divisors (153909666).

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

90728910 is a wasteful number, since it uses less digits than its factorization.

90728910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37359 (or 37347 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 90728910 is about 9525.1724393840. The cubic root of 90728910 is about 449.3470530366.

It can be divided in two parts, 90 and 728910, that added together give a cube (729000 = 90³).

The spelling of 90728910 in words is "ninety million, seven hundred twenty-eight thousand, nine hundred ten".