90731016 has 80 divisors (see below), whose sum is σ = 255987600. Its totient is φ = 30023136.

The previous prime is 90730963. The next prime is 90731029. The reversal of 90731016 is 61013709.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105195 + ... + 106053.

It is an arithmetic number, because the mean of its divisors is an integer number (3199845).

Almost surely, 2^90731016 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 90731016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127993800).

90731016 is an abundant number, since it is smaller than the sum of its proper divisors (165256584).

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

90731016 is a wasteful number, since it uses less digits than its factorization.

90731016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 90731016 is about 9525.2829879222. The cubic root of 90731016 is about 449.3505297585.

The spelling of 90731016 in words is "ninety million, seven hundred thirty-one thousand, sixteen".