990202574 has 4 divisors (see below), whose sum is σ = 1485303864. Its totient is φ = 495101286.

The previous prime is 990202531. The next prime is 990202607. The reversal of 990202574 is 475202099.

990202574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×990202574² = 1961002275112450952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247550642 + ... + 247550645.

It is an arithmetic number, because the mean of its divisors is an integer number (371325966).

Almost surely, 2^990202574 is an apocalyptic number.

990202574 is a deficient number, since it is larger than the sum of its proper divisors (495101290).

990202574 is a wasteful number, since it uses less digits than its factorization.

990202574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495101289.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 990202574 is about 31467.4843926234. The cubic root of 990202574 is about 996.7234673927.

It can be divided in two parts, 9902025 and 74, that added together give a palindrome (9902099).

The spelling of 990202574 in words is "nine hundred ninety million, two hundred two thousand, five hundred seventy-four".