97499220 has 144 divisors (see below), whose sum is σ = 342131328. Its totient is φ = 20563200.

The previous prime is 97499219. The next prime is 97499221. The reversal of 97499220 is 2299479.

It is an interprime number because it is at equal distance from previous prime (97499219) and next prime (97499221).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97499221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36945 + ... + 39495.

It is an arithmetic number, because the mean of its divisors is an integer number (2375912).

Almost surely, 2^97499220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97499220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171065664).

97499220 is an abundant number, since it is smaller than the sum of its proper divisors (244632108).

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

97499220 is a wasteful number, since it uses less digits than its factorization.

97499220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590 (or 2581 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 97499220 is about 9874.1693321514. The cubic root of 97499220 is about 460.2569767673.

The spelling of 97499220 in words is "ninety-seven million, four hundred ninety-nine thousand, two hundred twenty".