28464510 has 64 divisors (see below), whose sum is σ = 71368704. Its totient is φ = 7257600.

The previous prime is 28464509. The next prime is 28464521. The reversal of 28464510 is 1546482.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117990 + ... + 118230.

It is an arithmetic number, because the mean of its divisors is an integer number (1115136).

Almost surely, 2^28464510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28464510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35684352).

28464510 is an abundant number, since it is smaller than the sum of its proper divisors (42904194).

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

28464510 is a wasteful number, since it uses less digits than its factorization.

28464510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 28464510 is about 5335.2141475296. The cubic root of 28464510 is about 305.3288936234.

The spelling of 28464510 in words is "twenty-eight million, four hundred sixty-four thousand, five hundred ten".