997902528 has 112 divisors (see below), whose sum is σ = 3121639680. Its totient is φ = 275272704.

The previous prime is 997902517. The next prime is 997902539. The reversal of 997902528 is 825209799.

997902528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (997902517) and next prime (997902539).

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26175 + ... + 51777.

Almost surely, 2^997902528 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 997902528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560819840).

997902528 is an abundant number, since it is smaller than the sum of its proper divisors (2123737152).

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

997902528 is a wasteful number, since it uses less digits than its factorization.

997902528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25654 (or 25644 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 997902528 is about 31589.5952490690. The cubic root of 997902528 is about 999.3003532753.

The spelling of 997902528 in words is "nine hundred ninety-seven million, nine hundred two thousand, five hundred twenty-eight".