28169454 has 16 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 9317880.

The previous prime is 28169437. The next prime is 28169461. The reversal of 28169454 is 45496182.

It is a congruent number.

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, 17134 + ... + 18705.

It is an arithmetic number, because the mean of its divisors is an integer number (3548160).

Almost surely, 2^28169454 is an apocalyptic number.

28169454 is an abundant number, since it is smaller than the sum of its proper divisors (28601106).

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

28169454 is a wasteful number, since it uses less digits than its factorization.

28169454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35975.

The product of its digits is 69120, while the sum is 39.

The square root of 28169454 is about 5307.4903673959. The cubic root of 28169454 is about 304.2702395597.

The spelling of 28169454 in words is "twenty-eight million, one hundred sixty-nine thousand, four hundred fifty-four".