28472379 has 16 divisors (see below), whose sum is σ = 41271552. Its totient is φ = 17355168.

The previous prime is 28472377. The next prime is 28472401. The reversal of 28472379 is 97327482.

It is not a de Polignac number, because 28472379 - 2¹ = 28472377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28472379.

It is not an unprimeable number, because it can be changed into a prime (28472371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762 + ... + 7584.

It is an arithmetic number, because the mean of its divisors is an integer number (2579472).

Almost surely, 2^28472379 is an apocalyptic number.

28472379 is a deficient number, since it is larger than the sum of its proper divisors (12799173).

28472379 is a wasteful number, since it uses less digits than its factorization.

28472379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946.

The product of its digits is 169344, while the sum is 42.

The square root of 28472379 is about 5335.9515552524. The cubic root of 28472379 is about 305.3570270393.

The spelling of 28472379 in words is "twenty-eight million, four hundred seventy-two thousand, three hundred seventy-nine".