28713156 has 24 divisors (see below), whose sum is σ = 67389504. Its totient is φ = 9515040.

The previous prime is 28713143. The next prime is 28713169. The reversal of 28713156 is 65131782.

It is an interprime number because it is at equal distance from previous prime (28713143) and next prime (28713169).

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, 4840 + ... + 8991.

It is an arithmetic number, because the mean of its divisors is an integer number (2807896).

Almost surely, 2^28713156 is an apocalyptic number.

It is an amenable number.

28713156 is an abundant number, since it is smaller than the sum of its proper divisors (38676348).

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

28713156 is a wasteful number, since it uses less digits than its factorization.

28713156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14011 (or 14009 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 28713156 is about 5358.4658252153. The cubic root of 28713156 is about 306.2153637908.

The spelling of 28713156 in words is "twenty-eight million, seven hundred thirteen thousand, one hundred fifty-six".