28540554 has 16 divisors (see below), whose sum is σ = 65235648. Its totient is φ = 8154432.

The previous prime is 28540549. The next prime is 28540571. The reversal of 28540554 is 45504582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339727 + ... + 339810.

It is an arithmetic number, because the mean of its divisors is an integer number (4077228).

Almost surely, 2^28540554 is an apocalyptic number.

28540554 is an abundant number, since it is smaller than the sum of its proper divisors (36695094).

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

28540554 is a wasteful number, since it uses less digits than its factorization.

28540554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679549.

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 28540554 is about 5342.3360059060. The cubic root of 28540554 is about 305.6005510279.

The spelling of 28540554 in words is "twenty-eight million, five hundred forty thousand, five hundred fifty-four".