28872479 has 8 divisors (see below), whose sum is σ = 29686272. Its totient is φ = 28065240.

The previous prime is 28872461. The next prime is 28872497. The reversal of 28872479 is 97427882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28872461) and next prime (28872497).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28872479 - 2¹² = 28868383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28872499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8084 + ... + 11094.

It is an arithmetic number, because the mean of its divisors is an integer number (3710784).

Almost surely, 2^28872479 is an apocalyptic number.

28872479 is a deficient number, since it is larger than the sum of its proper divisors (813793).

28872479 is a wasteful number, since it uses less digits than its factorization.

28872479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277.

The product of its digits is 451584, while the sum is 47.

The square root of 28872479 is about 5373.3117348615. The cubic root of 28872479 is about 306.7806933927.

The spelling of 28872479 in words is "twenty-eight million, eight hundred seventy-two thousand, four hundred seventy-nine".