28101616 has 20 divisors (see below), whose sum is σ = 54656224. Its totient is φ = 13996800.

The previous prime is 28101599. The next prime is 28101637. The reversal of 28101616 is 61610182.

It is a super-2 number, since 2×28101616² = 1579401643622912, which contains 22 as substring.

It is a congruent number.

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, 1096 + ... + 7576.

Almost surely, 2^28101616 is an apocalyptic number.

It is an amenable number.

28101616 is a deficient number, since it is larger than the sum of its proper divisors (26554608).

28101616 is a wasteful number, since it uses less digits than its factorization.

28101616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760 (or 6754 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 28101616 is about 5301.0957357890. The cubic root of 28101616 is about 304.0257942102.

Adding to 28101616 its reverse (61610182), we get a palindrome (89711798).

The spelling of 28101616 in words is "twenty-eight million, one hundred one thousand, six hundred sixteen".