97129028 has 12 divisors (see below), whose sum is σ = 171535980. Its totient is φ = 48118752.

The previous prime is 97129013. The next prime is 97129049. The reversal of 97129028 is 82092179.

It can be written as a sum of positive squares in 2 ways, for example, as 71098624 + 26030404 = 8432^2 + 5102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 97128982 and 97129000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110951 + ... + 111822.

It is an arithmetic number, because the mean of its divisors is an integer number (14294665).

Almost surely, 2^97129028 is an apocalyptic number.

It is an amenable number.

97129028 is a deficient number, since it is larger than the sum of its proper divisors (74406952).

97129028 is a wasteful number, since it uses less digits than its factorization.

97129028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222886 (or 222884 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 97129028 is about 9855.4060291801. The cubic root of 97129028 is about 459.6737257830.

The spelling of 97129028 in words is "ninety-seven million, one hundred twenty-nine thousand, twenty-eight".