97280340 has 96 divisors (see below), whose sum is σ = 286675200. Its totient is φ = 24600576.

The previous prime is 97280333. The next prime is 97280347. The reversal of 97280340 is 4308279.

It is an interprime number because it is at equal distance from previous prime (97280333) and next prime (97280347).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97280347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216436 + ... + 216884.

It is an arithmetic number, because the mean of its divisors is an integer number (2986200).

Almost surely, 2^97280340 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 97280340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143337600).

97280340 is an abundant number, since it is smaller than the sum of its proper divisors (189394860).

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

97280340 is a wasteful number, since it uses less digits than its factorization.

97280340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 97280340 is about 9863.0796407613. The cubic root of 97280340 is about 459.9123021223.

The spelling of 97280340 in words is "ninety-seven million, two hundred eighty thousand, three hundred forty".