90699252 has 24 divisors (see below), whose sum is σ = 241864896. Its totient is φ = 25914048.

The previous prime is 90699251. The next prime is 90699311. The reversal of 90699252 is 25299609.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90699251) 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, 539793 + ... + 539960.

It is an arithmetic number, because the mean of its divisors is an integer number (10077704).

Almost surely, 2^90699252 is an apocalyptic number.

It is an amenable number.

90699252 is an abundant number, since it is smaller than the sum of its proper divisors (151165644).

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

90699252 is a wasteful number, since it uses less digits than its factorization.

90699252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079767 (or 1079765 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 90699252 is about 9523.6154899282. The cubic root of 90699252 is about 449.2980859644.

It can be divided in two parts, 90699 and 252, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 90699252 in words is "ninety million, six hundred ninety-nine thousand, two hundred fifty-two".