28714740 has 24 divisors (see below), whose sum is σ = 80401440. Its totient is φ = 7657248.

The previous prime is 28714723. The next prime is 28714747. The reversal of 28714740 is 4741782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28714747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239230 + ... + 239349.

It is an arithmetic number, because the mean of its divisors is an integer number (3350060).

Almost surely, 2^28714740 is an apocalyptic number.

28714740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28714740 is an abundant number, since it is smaller than the sum of its proper divisors (51686700).

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

28714740 is a wasteful number, since it uses less digits than its factorization.

28714740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478591 (or 478589 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 28714740 is about 5358.6136266762. The cubic root of 28714740 is about 306.2209946152.

The spelling of 28714740 in words is "twenty-eight million, seven hundred fourteen thousand, seven hundred forty".