97220418 has 16 divisors (see below), whose sum is σ = 195315456. Its totient is φ = 32261040.

The previous prime is 97220407. The next prime is 97220419. The reversal of 97220418 is 81402279.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97220419) 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, 34993 + ... + 37668.

It is an arithmetic number, because the mean of its divisors is an integer number (12207216).

Almost surely, 2^97220418 is an apocalyptic number.

97220418 is an abundant number, since it is smaller than the sum of its proper divisors (98095038).

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

97220418 is a wasteful number, since it uses less digits than its factorization.

97220418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72889.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 97220418 is about 9860.0414806430. The cubic root of 97220418 is about 459.8178516389.

The spelling of 97220418 in words is "ninety-seven million, two hundred twenty thousand, four hundred eighteen".