90651432 has 48 divisors (see below), whose sum is σ = 239207040. Its totient is φ = 28624032.

The previous prime is 90651401. The next prime is 90651437. The reversal of 90651432 is 23415609.

It is a self number, because there is not a number n which added to its sum of digits gives 90651432.

It is not an unprimeable number, because it can be changed into a prime (90651437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3433 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (4983480).

Almost surely, 2^90651432 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 90651432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119603520).

90651432 is an abundant number, since it is smaller than the sum of its proper divisors (148555608).

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

90651432 is a wasteful number, since it uses less digits than its factorization.

90651432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10510 (or 10487 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 90651432 is about 9521.1045577706. The cubic root of 90651432 is about 449.2191098939.

The spelling of 90651432 in words is "ninety million, six hundred fifty-one thousand, four hundred thirty-two".