997470852 has 72 divisors (see below), whose sum is σ = 2866709664. Its totient is φ = 268224768.

The previous prime is 997470823. The next prime is 997470883. The reversal of 997470852 is 258074799.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 997470795 and 997470804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39898 + ... + 59889.

It is an arithmetic number, because the mean of its divisors is an integer number (39815412).

Almost surely, 2^997470852 is an apocalyptic number.

It is an amenable number.

997470852 is an abundant number, since it is smaller than the sum of its proper divisors (1869238812).

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

997470852 is a wasteful number, since it uses less digits than its factorization.

997470852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99825 (or 99816 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 997470852 is about 31582.7619438199. The cubic root of 997470852 is about 999.1562389342.

The spelling of 997470852 in words is "nine hundred ninety-seven million, four hundred seventy thousand, eight hundred fifty-two".