97128429 has 8 divisors (see below), whose sum is σ = 137122560. Its totient is φ = 60943296.

The previous prime is 97128407. The next prime is 97128433. The reversal of 97128429 is 92482179.

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

It is not a de Polignac number, because 97128429 - 2⁵ = 97128397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97128469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952189 + ... + 952290.

It is an arithmetic number, because the mean of its divisors is an integer number (17140320).

Almost surely, 2^97128429 is an apocalyptic number.

It is an amenable number.

97128429 is a deficient number, since it is larger than the sum of its proper divisors (39994131).

97128429 is a wasteful number, since it uses less digits than its factorization.

97128429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904499.

The product of its digits is 72576, while the sum is 42.

The square root of 97128429 is about 9855.3756397207. The cubic root of 97128429 is about 459.6727808367.

The spelling of 97128429 in words is "ninety-seven million, one hundred twenty-eight thousand, four hundred twenty-nine".