28440862 has 4 divisors (see below), whose sum is σ = 42661296. Its totient is φ = 14220430.

The previous prime is 28440833. The next prime is 28440887. The reversal of 28440862 is 26804482.

It is a semiprime because it is the product of two primes.

It is a super-4 number, since 4×28440862⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7110214 + ... + 7110217.

It is an arithmetic number, because the mean of its divisors is an integer number (10665324).

Almost surely, 2^28440862 is an apocalyptic number.

28440862 is a deficient number, since it is larger than the sum of its proper divisors (14220434).

28440862 is a wasteful number, since it uses less digits than its factorization.

28440862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14220433.

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 28440862 is about 5332.9974685912. The cubic root of 28440862 is about 305.2443155746.

The spelling of 28440862 in words is "twenty-eight million, four hundred forty thousand, eight hundred sixty-two".