28701272 has 8 divisors (see below), whose sum is σ = 53814900. Its totient is φ = 14350632.

The previous prime is 28701269. The next prime is 28701311. The reversal of 28701272 is 27210782.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1793822 + ... + 1793837.

Almost surely, 2^28701272 is an apocalyptic number.

It is an amenable number.

28701272 is a deficient number, since it is larger than the sum of its proper divisors (25113628).

28701272 is a wasteful number, since it uses less digits than its factorization.

28701272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587665 (or 3587661 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 28701272 is about 5357.3568109656. The cubic root of 28701272 is about 306.1731117821.

The spelling of 28701272 in words is "twenty-eight million, seven hundred one thousand, two hundred seventy-two".