90750744 has 144 divisors (see below), whose sum is σ = 296103600. Its totient is φ = 25006464.

The previous prime is 90750731. The next prime is 90750767. The reversal of 90750744 is 44705709.

It is a happy number.

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 = 90750699 and 90750708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 101869 + ... + 102755.

It is an arithmetic number, because the mean of its divisors is an integer number (2056275).

Almost surely, 2^90750744 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 90750744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148051800).

90750744 is an abundant number, since it is smaller than the sum of its proper divisors (205352856).

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

90750744 is a wasteful number, since it uses less digits than its factorization.

90750744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 90750744 is about 9526.3184914215. The cubic root of 90750744 is about 449.3830954133.

The spelling of 90750744 in words is "ninety million, seven hundred fifty thousand, seven hundred forty-four".