28504710 has 80 divisors (see below), whose sum is σ = 82572336. Its totient is φ = 7013952.

The previous prime is 28504703. The next prime is 28504739. The reversal of 28504710 is 1740582.

It is a super-3 number, since 3×28504710³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9177 + ... + 11883.

Almost surely, 2^28504710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28504710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41286168).

28504710 is an abundant number, since it is smaller than the sum of its proper divisors (54067626).

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

28504710 is a wasteful number, since it uses less digits than its factorization.

28504710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28504710 is about 5338.9802397087. The cubic root of 28504710 is about 305.4725631475.

The spelling of 28504710 in words is "twenty-eight million, five hundred four thousand, seven hundred ten".