28486972 has 24 divisors (see below), whose sum is σ = 52214400. Its totient is φ = 13573296.

The previous prime is 28486967. The next prime is 28486973. The reversal of 28486972 is 27968482.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28486973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38179 + ... + 38917.

It is an arithmetic number, because the mean of its divisors is an integer number (2175600).

Almost surely, 2^28486972 is an apocalyptic number.

It is an amenable number.

28486972 is a deficient number, since it is larger than the sum of its proper divisors (23727428).

28486972 is a wasteful number, since it uses less digits than its factorization.

28486972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1183 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 28486972 is about 5337.3188025450. The cubic root of 28486972 is about 305.4091865260.

The spelling of 28486972 in words is "twenty-eight million, four hundred eighty-six thousand, nine hundred seventy-two".