28197806070 has 96 divisors (see below), whose sum is σ = 79071406848. Its totient is φ = 6416743872.

The previous prime is 28197806069. The next prime is 28197806111. The reversal of 28197806070 is 7060879182.

It is a super-2 number, since 2×28197806070² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 291439 + ... + 375941.

It is an arithmetic number, because the mean of its divisors is an integer number (823660488).

Almost surely, 2^28197806070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28197806070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39535703424).

28197806070 is an abundant number, since it is smaller than the sum of its proper divisors (50873600778).

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

28197806070 is a wasteful number, since it uses less digits than its factorization.

28197806070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84754 (or 84747 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 28197806070 in words is "twenty-eight billion, one hundred ninety-seven million, eight hundred six thousand, seventy".