90748440 has 48 divisors (see below), whose sum is σ = 294933600. Its totient is φ = 24199488.

The previous prime is 90748429. The next prime is 90748487. The reversal of 90748440 is 4484709.

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

It is a junction number, because it is equal to n+sod(n) for n = 90748395 and 90748404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125680 + ... + 126399.

It is an arithmetic number, because the mean of its divisors is an integer number (6144450).

Almost surely, 2^90748440 is an apocalyptic number.

90748440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90748440 is an abundant number, since it is smaller than the sum of its proper divisors (204185160).

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

90748440 is a wasteful number, since it uses less digits than its factorization.

90748440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252096 (or 252089 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 90748440 is about 9526.1975625115. The cubic root of 90748440 is about 449.3792923685.

The spelling of 90748440 in words is "ninety million, seven hundred forty-eight thousand, four hundred forty".