90748267392 has 128 divisors (see below), whose sum is σ = 256055904000. Its totient is φ = 28377866240.

The previous prime is 90748267391. The next prime is 90748267399. The reversal of 90748267392 is 29376284709.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90748267391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2007859 + ... + 2052557.

It is an arithmetic number, because the mean of its divisors is an integer number (2000436750).

Almost surely, 2^90748267392 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 90748267392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128027952000).

90748267392 is an abundant number, since it is smaller than the sum of its proper divisors (165307636608).

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

90748267392 is a wasteful number, since it uses less digits than its factorization.

90748267392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45044 (or 45032 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 90748267392 in words is "ninety billion, seven hundred forty-eight million, two hundred sixty-seven thousand, three hundred ninety-two".