28987030 has 16 divisors (see below), whose sum is σ = 52384320. Its totient is φ = 11548672.

The previous prime is 28987019. The next prime is 28987039. The reversal of 28987030 is 3078982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28987039) 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, 3070 + ... + 8209.

It is an arithmetic number, because the mean of its divisors is an integer number (3274020).

Almost surely, 2^28987030 is an apocalyptic number.

28987030 is a deficient number, since it is larger than the sum of its proper divisors (23397290).

28987030 is a wasteful number, since it uses less digits than its factorization.

28987030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11543.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 28987030 is about 5383.9604381905. The cubic root of 28987030 is about 307.1858734982.

The spelling of 28987030 in words is "twenty-eight million, nine hundred eighty-seven thousand, thirty".