28197696 has 112 divisors (see below), whose sum is σ = 80979264. Its totient is φ = 8626176.

The previous prime is 28197647. The next prime is 28197731. The reversal of 28197696 is 69679182.

It is a super-2 number, since 2×28197696² = 1590220119416832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172911 + ... + 173073.

Almost surely, 2^28197696 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 28197696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40489632).

28197696 is an abundant number, since it is smaller than the sum of its proper divisors (52781568).

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

28197696 is a wasteful number, since it uses less digits than its factorization.

28197696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 238 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 28197696 is about 5310.1502803593. The cubic root of 28197696 is about 304.3718902096.

The spelling of 28197696 in words is "twenty-eight million, one hundred ninety-seven thousand, six hundred ninety-six".