90734280 has 192 divisors, whose sum is σ = 341288640. Its totient is φ = 19127808.

The previous prime is 90734279. The next prime is 90734311. The reversal of 90734280 is 8243709.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75847 + ... + 77033.

It is an arithmetic number, because the mean of its divisors is an integer number (1777545).

Almost surely, 2^90734280 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 90734280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170644320).

90734280 is an abundant number, since it is smaller than the sum of its proper divisors (250554360).

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

90734280 is a wasteful number, since it uses less digits than its factorization.

90734280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 90734280 is about 9525.4543198737. The cubic root of 90734280 is about 449.3559180759.

Adding to 90734280 its reverse (8243709), we get a palindrome (98977989).

The spelling of 90734280 in words is "ninety million, seven hundred thirty-four thousand, two hundred eighty".