28472751 has 36 divisors (see below), whose sum is σ = 44296200. Its totient is φ = 17597664.

The previous prime is 28472747. The next prime is 28472767. The reversal of 28472751 is 15727482.

It is not a de Polignac number, because 28472751 - 2² = 28472747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28472771) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 482560 + ... + 482618.

It is an arithmetic number, because the mean of its divisors is an integer number (1230450).

Almost surely, 2^28472751 is an apocalyptic number.

28472751 is a deficient number, since it is larger than the sum of its proper divisors (15823449).

28472751 is a wasteful number, since it uses less digits than its factorization.

28472751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 134 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28472751 is about 5335.9864130262. The cubic root of 28472751 is about 305.3583568933.

The spelling of 28472751 in words is "twenty-eight million, four hundred seventy-two thousand, seven hundred fifty-one".