28773672 has 16 divisors (see below), whose sum is σ = 71934240. Its totient is φ = 9591216.

The previous prime is 28773671. The next prime is 28773683. The reversal of 28773672 is 27637782.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (28773671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599428 + ... + 599475.

It is an arithmetic number, because the mean of its divisors is an integer number (4495890).

Almost surely, 2^28773672 is an apocalyptic number.

It is an amenable number.

28773672 is an abundant number, since it is smaller than the sum of its proper divisors (43160568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28773672 is a wasteful number, since it uses less digits than its factorization.

28773672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198912 (or 1198908 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 28773672 is about 5364.1096185667. The cubic root of 28773672 is about 306.4303398752.

The spelling of 28773672 in words is "twenty-eight million, seven hundred seventy-three thousand, six hundred seventy-two".