97279694928 has 400 divisors, whose sum is σ = 314392075536. Its totient is φ = 28844605440.

The previous prime is 97279694909. The next prime is 97279694933. The reversal of 97279694928 is 82949697279.

97279694928 is a `hidden beast` number, since 9 + 7 + 2 + 79 + 69 + 492 + 8 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 9433848384 + 87845846544 = 97128^2 + 296388^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 70440798 + ... + 70442178.

Almost surely, 2^97279694928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97279694928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157196037768).

97279694928 is an abundant number, since it is smaller than the sum of its proper divisors (217112380608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97279694928 is a wasteful number, since it uses less digits than its factorization.

97279694928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1549 counting only the distinct ones).

The product of its digits is 246903552, while the sum is 72.

The spelling of 97279694928 in words is "ninety-seven billion, two hundred seventy-nine million, six hundred ninety-four thousand, nine hundred twenty-eight".