97739220 has 24 divisors (see below), whose sum is σ = 273669984. Its totient is φ = 26063776.

The previous prime is 97739207. The next prime is 97739221. The reversal of 97739220 is 2293779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97739221) 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, 814434 + ... + 814553.

It is an arithmetic number, because the mean of its divisors is an integer number (11402916).

Almost surely, 2^97739220 is an apocalyptic number.

It is an amenable number.

97739220 is an abundant number, since it is smaller than the sum of its proper divisors (175930764).

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

97739220 is a wasteful number, since it uses less digits than its factorization.

97739220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628999 (or 1628997 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 97739220 is about 9886.3147835784. The cubic root of 97739220 is about 460.6343170928.

The spelling of 97739220 in words is "ninety-seven million, seven hundred thirty-nine thousand, two hundred twenty".