97213420 has 24 divisors (see below), whose sum is σ = 205761024. Its totient is φ = 38578176.

The previous prime is 97213381. The next prime is 97213421. The reversal of 97213420 is 2431279.

It is not an unprimeable number, because it can be changed into a prime (97213421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16597 + ... + 21676.

It is an arithmetic number, because the mean of its divisors is an integer number (8573376).

Almost surely, 2^97213420 is an apocalyptic number.

It is an amenable number.

97213420 is an abundant number, since it is smaller than the sum of its proper divisors (108547604).

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

97213420 is a wasteful number, since it uses less digits than its factorization.

97213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38409 (or 38407 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 97213420 is about 9859.6866075956. The cubic root of 97213420 is about 459.8068186940.

Adding to 97213420 its reverse (2431279), we get a palindrome (99644699).

The spelling of 97213420 in words is "ninety-seven million, two hundred thirteen thousand, four hundred twenty".