28479073 has 16 divisors (see below), whose sum is σ = 34318080. Its totient is φ = 23115456.

The previous prime is 28479067. The next prime is 28479109. The reversal of 28479073 is 37097482.

It is not a de Polignac number, because 28479073 - 2⁵ = 28479041 is a prime.

It is a super-2 number, since 2×28479073² = 1622115197878658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28479673) 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, 9436 + ... + 12082.

It is an arithmetic number, because the mean of its divisors is an integer number (2144880).

Almost surely, 2^28479073 is an apocalyptic number.

It is an amenable number.

28479073 is a deficient number, since it is larger than the sum of its proper divisors (5839007).

28479073 is a wasteful number, since it uses less digits than its factorization.

28479073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 28479073 is about 5336.5787729593. The cubic root of 28479073 is about 305.3809554902.

The spelling of 28479073 in words is "twenty-eight million, four hundred seventy-nine thousand, seventy-three".