97142428 has 12 divisors (see below), whose sum is σ = 173207160. Its totient is φ = 47654672.

The previous prime is 97142417. The next prime is 97142449. The reversal of 97142428 is 82424179.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228898 + ... + 229321.

It is an arithmetic number, because the mean of its divisors is an integer number (14433930).

Almost surely, 2^97142428 is an apocalyptic number.

It is an amenable number.

97142428 is a deficient number, since it is larger than the sum of its proper divisors (76064732).

97142428 is a wasteful number, since it uses less digits than its factorization.

97142428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458276 (or 458274 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 97142428 is about 9856.0858356652. The cubic root of 97142428 is about 459.6948637984.

The spelling of 97142428 in words is "ninety-seven million, one hundred forty-two thousand, four hundred twenty-eight".