90247392 has 96 divisors (see below), whose sum is σ = 267321600. Its totient is φ = 29614464.

The previous prime is 90247387. The next prime is 90247429. The reversal of 90247392 is 29374209.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 57109 + ... + 58667.

It is an arithmetic number, because the mean of its divisors is an integer number (2784600).

Almost surely, 2^90247392 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 90247392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133660800).

90247392 is an abundant number, since it is smaller than the sum of its proper divisors (177074208).

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

90247392 is a wasteful number, since it uses less digits than its factorization.

90247392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 90247392 is about 9499.8627358505. The cubic root of 90247392 is about 448.5507151742.

The spelling of 90247392 in words is "ninety million, two hundred forty-seven thousand, three hundred ninety-two".