97288278 has 8 divisors (see below), whose sum is σ = 194576568. Its totient is φ = 32429424.

The previous prime is 97288273. The next prime is 97288283. The reversal of 97288278 is 87288279.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (97288273) and next prime (97288283).

It is a sphenic number, since it is the product of 3 distinct primes.

97288278 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 97288278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97288273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8107351 + ... + 8107362.

It is an arithmetic number, because the mean of its divisors is an integer number (24322071).

Almost surely, 2^97288278 is an apocalyptic number.

97288278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

97288278 is a wasteful number, since it uses less digits than its factorization.

97288278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16214718.

The product of its digits is 903168, while the sum is 51.

The square root of 97288278 is about 9863.4820423621. The cubic root of 97288278 is about 459.9248112773.

Subtracting from 97288278 its reverse (87288279), we obtain a palindrome (9999999).

The spelling of 97288278 in words is "ninety-seven million, two hundred eighty-eight thousand, two hundred seventy-eight".