28870314 has 64 divisors (see below), whose sum is σ = 66189312. Its totient is φ = 8316800.

The previous prime is 28870307. The next prime is 28870321. The reversal of 28870314 is 41307882.

It is an interprime number because it is at equal distance from previous prime (28870307) and next prime (28870321).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127069 + ... + 127295.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^28870314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28870314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33094656).

28870314 is an abundant number, since it is smaller than the sum of its proper divisors (37318998).

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

28870314 is a wasteful number, since it uses less digits than its factorization.

28870314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28870314 is about 5373.1102724586. The cubic root of 28870314 is about 306.7730252276.

The spelling of 28870314 in words is "twenty-eight million, eight hundred seventy thousand, three hundred fourteen".