90942784 has 14 divisors (see below), whose sum is σ = 180464714. Its totient is φ = 45471360.

The previous prime is 90942773. The next prime is 90942793. The reversal of 90942784 is 48724909.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 160000 = 9528^2 + 400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90942784.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710427 + ... + 710554.

Almost surely, 2^90942784 is an apocalyptic number.

It is an amenable number.

90942784 is a deficient number, since it is larger than the sum of its proper divisors (89521930).

90942784 is a wasteful number, since it uses less digits than its factorization.

90942784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420993 (or 1420983 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 90942784 is about 9536.3926093675. The cubic root of 90942784 is about 449.6998558193.

Adding to 90942784 its product of nonzero digits (145152), we get a square (91087936 = 9544²).

The spelling of 90942784 in words is "ninety million, nine hundred forty-two thousand, seven hundred eighty-four".