28049973 has 16 divisors (see below), whose sum is σ = 42869376. Its totient is φ = 15981120.

The previous prime is 28049971. The next prime is 28049999. The reversal of 28049973 is 37994082.

It is not a de Polignac number, because 28049973 - 2¹ = 28049971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28049971) 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, 6043 + ... + 9623.

It is an arithmetic number, because the mean of its divisors is an integer number (2679336).

Almost surely, 2^28049973 is an apocalyptic number.

It is an amenable number.

28049973 is a deficient number, since it is larger than the sum of its proper divisors (14819403).

28049973 is a wasteful number, since it uses less digits than its factorization.

28049973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 28049973 is about 5296.2225217602. Note that the first 3 decimals coincide. The cubic root of 28049973 is about 303.8394415602.

The spelling of 28049973 in words is "twenty-eight million, forty-nine thousand, nine hundred seventy-three".