28771854 has 32 divisors (see below), whose sum is σ = 61191936. Its totient is φ = 8987520.

The previous prime is 28771819. The next prime is 28771889. The reversal of 28771854 is 45817782.

It is an interprime number because it is at equal distance from previous prime (28771819) and next prime (28771889).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31269 + ... + 32175.

It is an arithmetic number, because the mean of its divisors is an integer number (1912248).

Almost surely, 2^28771854 is an apocalyptic number.

28771854 is an abundant number, since it is smaller than the sum of its proper divisors (32420082).

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

28771854 is a wasteful number, since it uses less digits than its factorization.

28771854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its digits is 125440, while the sum is 42.

The square root of 28771854 is about 5363.9401562657. The cubic root of 28771854 is about 306.4238860345.

The spelling of 28771854 in words is "twenty-eight million, seven hundred seventy-one thousand, eight hundred fifty-four".