90270736 has 40 divisors (see below), whose sum is σ = 181874520. Its totient is φ = 43352064.

The previous prime is 90270727. The next prime is 90270737. The reversal of 90270736 is 63707209.

90270736 = 460² + 461² + ... + 716².

It can be written as a sum of positive squares in 4 ways, for example, as 45968400 + 44302336 = 6780^2 + 6656^2 .

It is not an unprimeable number, because it can be changed into a prime (90270737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118870 + ... + 119626.

It is an arithmetic number, because the mean of its divisors is an integer number (4546863).

Almost surely, 2^90270736 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 90270736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90937260).

90270736 is an abundant number, since it is smaller than the sum of its proper divisors (91603784).

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

90270736 is a wasteful number, since it uses less digits than its factorization.

90270736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 90270736 is about 9501.0913057396. The cubic root of 90270736 is about 448.5893868926.

The spelling of 90270736 in words is "ninety million, two hundred seventy thousand, seven hundred thirty-six".