28470486 has 32 divisors (see below), whose sum is σ = 62747136. Its totient is φ = 8540000.

The previous prime is 28470457. The next prime is 28470499. The reversal of 28470486 is 68407482.

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, 4531 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (1960848).

Almost surely, 2^28470486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28470486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31373568).

28470486 is an abundant number, since it is smaller than the sum of its proper divisors (34276650).

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

28470486 is a wasteful number, since it uses less digits than its factorization.

28470486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 28470486 is about 5335.7741706335. The cubic root of 28470486 is about 305.3502596190.

The spelling of 28470486 in words is "twenty-eight million, four hundred seventy thousand, four hundred eighty-six".