28905154 has 4 divisors (see below), whose sum is σ = 43357734. Its totient is φ = 14452576.

The previous prime is 28905143. The next prime is 28905167. The reversal of 28905154 is 45150982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 762129 = 5305^2 + 873^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7226287 + ... + 7226290.

Almost surely, 2^28905154 is an apocalyptic number.

28905154 is a deficient number, since it is larger than the sum of its proper divisors (14452580).

28905154 is a wasteful number, since it uses less digits than its factorization.

28905154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14452579.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 28905154 is about 5376.3513650058. The cubic root of 28905154 is about 306.8963777221.

The spelling of 28905154 in words is "twenty-eight million, nine hundred five thousand, one hundred fifty-four".