97470820 has 24 divisors (see below), whose sum is σ = 211292928. Its totient is φ = 37730400.

The previous prime is 97470811. The next prime is 97470823. The reversal of 97470820 is 2807479.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 97470820.

It is not an unprimeable number, because it can be changed into a prime (97470823) 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, 77986 + ... + 79225.

It is an arithmetic number, because the mean of its divisors is an integer number (8803872).

Almost surely, 2^97470820 is an apocalyptic number.

It is an amenable number.

97470820 is an abundant number, since it is smaller than the sum of its proper divisors (113822108).

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

97470820 is a wasteful number, since it uses less digits than its factorization.

97470820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157251 (or 157249 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 97470820 is about 9872.7311317588. The cubic root of 97470820 is about 460.2122838713.

The spelling of 97470820 in words is "ninety-seven million, four hundred seventy thousand, eight hundred twenty".