28787654 has 32 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 11813760.

The previous prime is 28787621. The next prime is 28787657. The reversal of 28787654 is 45678782.

It is a junction number, because it is equal to n+sod(n) for n = 28787599 and 28787608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28787657) 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, 48749 + ... + 49335.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^28787654 is an apocalyptic number.

28787654 is a deficient number, since it is larger than the sum of its proper divisors (22692922).

28787654 is a wasteful number, since it uses less digits than its factorization.

28787654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its digits is 752640, while the sum is 47.

The square root of 28787654 is about 5365.4127520630. The cubic root of 28787654 is about 306.4799664367.

The spelling of 28787654 in words is "twenty-eight million, seven hundred eighty-seven thousand, six hundred fifty-four".