28993654 has 4 divisors (see below), whose sum is σ = 43490484. Its totient is φ = 14496826.

The previous prime is 28993637. The next prime is 28993693. The reversal of 28993654 is 45639982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45639982 = 2 ⋅22819991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7248412 + ... + 7248415.

It is an arithmetic number, because the mean of its divisors is an integer number (10872621).

Almost surely, 2^28993654 is an apocalyptic number.

28993654 is a deficient number, since it is larger than the sum of its proper divisors (14496830).

28993654 is a wasteful number, since it uses less digits than its factorization.

28993654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14496829.

The product of its digits is 466560, while the sum is 46.

The square root of 28993654 is about 5384.5755635890. The cubic root of 28993654 is about 307.2092706779.

The spelling of 28993654 in words is "twenty-eight million, nine hundred ninety-three thousand, six hundred fifty-four".