90748388 has 12 divisors (see below), whose sum is σ = 159376812. Its totient is φ = 45212160.

The previous prime is 90748387. The next prime is 90748393. The reversal of 90748388 is 88384709.

It can be written as a sum of positive squares in 2 ways, for example, as 80964004 + 9784384 = 8998^2 + 3128^2 .

It is not an unprimeable number, because it can be changed into a prime (90748381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39245 + ... + 41492.

It is an arithmetic number, because the mean of its divisors is an integer number (13281401).

Almost surely, 2^90748388 is an apocalyptic number.

It is an amenable number.

90748388 is a deficient number, since it is larger than the sum of its proper divisors (68628424).

90748388 is a wasteful number, since it uses less digits than its factorization.

90748388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81022 (or 81020 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 90748388 is about 9526.1948331955. The cubic root of 90748388 is about 449.3792065352.

The spelling of 90748388 in words is "ninety million, seven hundred forty-eight thousand, three hundred eighty-eight".