97880286 has 64 divisors (see below), whose sum is σ = 237196800. Its totient is φ = 26303616.

The previous prime is 97880239. The next prime is 97880287. The reversal of 97880286 is 68208879.

97880286 = 135² + 136² + ... + 666².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97880287) 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, 137700 + ... + 138408.

It is an arithmetic number, because the mean of its divisors is an integer number (3706200).

Almost surely, 2^97880286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97880286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118598400).

97880286 is an abundant number, since it is smaller than the sum of its proper divisors (139316514).

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

97880286 is a wasteful number, since it uses less digits than its factorization.

97880286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 97880286 is about 9893.4466188483. The cubic root of 97880286 is about 460.8558201361.

The spelling of 97880286 in words is "ninety-seven million, eight hundred eighty thousand, two hundred eighty-six".