28401479 has 12 divisors (see below), whose sum is σ = 29744400. Its totient is φ = 27102240.

The previous prime is 28401467. The next prime is 28401497. The reversal of 28401479 is 97410482.

It is not a de Polignac number, because 28401479 - 2⁴ = 28401463 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 (28401419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142622 + ... + 142820.

It is an arithmetic number, because the mean of its divisors is an integer number (2478700).

Almost surely, 2^28401479 is an apocalyptic number.

28401479 is a deficient number, since it is larger than the sum of its proper divisors (1342921).

28401479 is an equidigital number, since it uses as much as digits as its factorization.

28401479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 28401479 is about 5329.3038006854. The cubic root of 28401479 is about 305.1033565326.

The spelling of 28401479 in words is "twenty-eight million, four hundred one thousand, four hundred seventy-nine".