97427220 has 48 divisors (see below), whose sum is σ = 297597888. Its totient is φ = 23618560.

The previous prime is 97427191. The next prime is 97427233. The reversal of 97427220 is 2272479.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 73149 + ... + 74468.

It is an arithmetic number, because the mean of its divisors is an integer number (6199956).

Almost surely, 2^97427220 is an apocalyptic number.

It is an amenable number.

97427220 is an abundant number, since it is smaller than the sum of its proper divisors (200170668).

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

97427220 is a wasteful number, since it uses less digits than its factorization.

97427220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147640 (or 147638 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 97427220 is about 9870.5227825075. The cubic root of 97427220 is about 460.1436539362.

Adding to 97427220 its reverse (2272479), we get a palindrome (99699699).

The spelling of 97427220 in words is "ninety-seven million, four hundred twenty-seven thousand, two hundred twenty".