28112658 has 32 divisors (see below), whose sum is σ = 66476160. Its totient is φ = 7754880.

The previous prime is 28112657. The next prime is 28112659. The reversal of 28112658 is 85621182.

It is an interprime number because it is at equal distance from previous prime (28112657) and next prime (28112659).

It is not an unprimeable number, because it can be changed into a prime (28112653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10323 + ... + 12758.

It is an arithmetic number, because the mean of its divisors is an integer number (2077380).

Almost surely, 2^28112658 is an apocalyptic number.

28112658 is an abundant number, since it is smaller than the sum of its proper divisors (38363502).

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

28112658 is a wasteful number, since it uses less digits than its factorization.

28112658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23122.

The product of its digits is 7680, while the sum is 33.

The square root of 28112658 is about 5302.1371162957. The cubic root of 28112658 is about 304.0656093964.

The spelling of 28112658 in words is "twenty-eight million, one hundred twelve thousand, six hundred fifty-eight".