90231652 has 48 divisors (see below), whose sum is σ = 188479872. Its totient is φ = 36990720.

The previous prime is 90231649. The next prime is 90231653. The reversal of 90231652 is 25613209.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 90231652.

It is not an unprimeable number, because it can be changed into a prime (90231653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60103 + ... + 61585.

It is an arithmetic number, because the mean of its divisors is an integer number (3926664).

Almost surely, 2^90231652 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 90231652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94239936).

90231652 is an abundant number, since it is smaller than the sum of its proper divisors (98248220).

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

90231652 is a wasteful number, since it uses less digits than its factorization.

90231652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 90231652 is about 9499.0342667031. The cubic root of 90231652 is about 448.5246364935.

The spelling of 90231652 in words is "ninety million, two hundred thirty-one thousand, six hundred fifty-two".