90710172 has 144 divisors (see below), whose sum is σ = 279044640. Its totient is φ = 25401600.

The previous prime is 90710171. The next prime is 90710197. The reversal of 90710172 is 27101709.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90710171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 322672 + ... + 322952.

It is an arithmetic number, because the mean of its divisors is an integer number (1937810).

Almost surely, 2^90710172 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 90710172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139522320).

90710172 is an abundant number, since it is smaller than the sum of its proper divisors (188334468).

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

90710172 is a wasteful number, since it uses less digits than its factorization.

90710172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 90710172 is about 9524.1887843532. The cubic root of 90710172 is about 449.3161167570.

The spelling of 90710172 in words is "ninety million, seven hundred ten thousand, one hundred seventy-two".