97612290 has 80 divisors (see below), whose sum is σ = 269645112. Its totient is φ = 25318656.

The previous prime is 97612241. The next prime is 97612301. The reversal of 97612290 is 9221679.

It can be written as a sum of positive squares in 4 ways, for example, as 97476129 + 136161 = 9873^2 + 369^2 .

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 28342 + ... + 31598.

Almost surely, 2^97612290 is an apocalyptic number.

97612290 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 97612290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134822556).

97612290 is an abundant number, since it is smaller than the sum of its proper divisors (172032822).

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

97612290 is a wasteful number, since it uses less digits than its factorization.

97612290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3304 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 97612290 is about 9879.8932180464. The cubic root of 97612290 is about 460.4348282820.

The spelling of 97612290 in words is "ninety-seven million, six hundred twelve thousand, two hundred ninety".