70128297 has 24 divisors (see below), whose sum is σ = 108236960. Its totient is φ = 43623360.

The previous prime is 70128241. The next prime is 70128299. The reversal of 70128297 is 79282107.

It is not a de Polignac number, because 70128297 - 2⁸ = 70128041 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70128299) 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, 8397 + ... + 14517.

Almost surely, 2^70128297 is an apocalyptic number.

It is an amenable number.

70128297 is a deficient number, since it is larger than the sum of its proper divisors (38108663).

70128297 is a wasteful number, since it uses less digits than its factorization.

70128297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213 (or 6210 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70128297 is about 8374.2639676571. The cubic root of 70128297 is about 412.3801613313.

The spelling of 70128297 in words is "seventy million, one hundred twenty-eight thousand, two hundred ninety-seven".