97280290 has 48 divisors (see below), whose sum is σ = 190779624. Its totient is φ = 35686400.

The previous prime is 97280269. The next prime is 97280291. The reversal of 97280290 is 9208279.

It can be written as a sum of positive squares in 12 ways, for example, as 4524129 + 92756161 = 2127^2 + 9631^2 .

It is not an unprimeable number, because it can be changed into a prime (97280291) 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 23 ways as a sum of consecutive naturals, for example, 118080 + ... + 118900.

Almost surely, 2^97280290 is an apocalyptic number.

97280290 is a deficient number, since it is larger than the sum of its proper divisors (93499334).

97280290 is a wasteful number, since it uses less digits than its factorization.

97280290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 97280290 is about 9863.0771060557. The cubic root of 97280290 is about 459.9122233272.

The spelling of 97280290 in words is "ninety-seven million, two hundred eighty thousand, two hundred ninety".