28157416 has 48 divisors (see below), whose sum is σ = 61840800. Its totient is φ = 11773632.

The previous prime is 28157383. The next prime is 28157429. The reversal of 28157416 is 61475182.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157215 + ... + 157393.

It is an arithmetic number, because the mean of its divisors is an integer number (1288350).

Almost surely, 2^28157416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28157416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30920400).

28157416 is an abundant number, since it is smaller than the sum of its proper divisors (33683384).

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

28157416 is a wasteful number, since it uses less digits than its factorization.

28157416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 241 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 28157416 is about 5306.3561885723. The cubic root of 28157416 is about 304.2268908668.

The spelling of 28157416 in words is "twenty-eight million, one hundred fifty-seven thousand, four hundred sixteen".