28103736 has 32 divisors (see below), whose sum is σ = 73958400. Its totient is φ = 8874720.

The previous prime is 28103731. The next prime is 28103741. The reversal of 28103736 is 63730182.

It is an interprime number because it is at equal distance from previous prime (28103731) and next prime (28103741).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28103731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30360 + ... + 31271.

It is an arithmetic number, because the mean of its divisors is an integer number (2311200).

Almost surely, 2^28103736 is an apocalyptic number.

It is an amenable number.

28103736 is an abundant number, since it is smaller than the sum of its proper divisors (45854664).

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

28103736 is a wasteful number, since it uses less digits than its factorization.

28103736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61659 (or 61655 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 28103736 is about 5301.2956906779. The cubic root of 28103736 is about 304.0334393041.

The spelling of 28103736 in words is "twenty-eight million, one hundred three thousand, seven hundred thirty-six".