90719424 has 84 divisors (see below), whose sum is σ = 269046960. Its totient is φ = 29191680.

The previous prime is 90719417. The next prime is 90719437. The reversal of 90719424 is 42491709.

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

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, 13989 + ... + 19419.

It is an arithmetic number, because the mean of its divisors is an integer number (3202940).

Almost surely, 2^90719424 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 90719424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134523480).

90719424 is an abundant number, since it is smaller than the sum of its proper divisors (178327536).

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

90719424 is a wasteful number, since it uses less digits than its factorization.

90719424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5478 (or 5465 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 90719424 is about 9524.6744826267. The cubic root of 90719424 is about 449.3313922632.

The spelling of 90719424 in words is "ninety million, seven hundred nineteen thousand, four hundred twenty-four".