97129828 has 24 divisors (see below), whose sum is σ = 178956288. Its totient is φ = 46037376.

The previous prime is 97129817. The next prime is 97129829. The reversal of 97129828 is 82892179.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (97129829) 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, 5725 + ... + 15067.

It is an arithmetic number, because the mean of its divisors is an integer number (7456512).

Almost surely, 2^97129828 is an apocalyptic number.

It is an amenable number.

97129828 is a deficient number, since it is larger than the sum of its proper divisors (81826460).

97129828 is a wasteful number, since it uses less digits than its factorization.

97129828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483 (or 9481 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 97129828 is about 9855.4466159581. The cubic root of 97129828 is about 459.6749878086.

The spelling of 97129828 in words is "ninety-seven million, one hundred twenty-nine thousand, eight hundred twenty-eight".