28849751 has 32 divisors (see below), whose sum is σ = 36771840. Its totient is φ = 22087296.

The previous prime is 28849729. The next prime is 28849753. The reversal of 28849751 is 15794882.

It is not a de Polignac number, because 28849751 - 2¹⁴ = 28833367 is a prime.

It is a super-3 number, since 3×28849751³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28849753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172670 + ... + 172836.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^28849751 is an apocalyptic number.

28849751 is a deficient number, since it is larger than the sum of its proper divisors (7922089).

28849751 is a wasteful number, since it uses less digits than its factorization.

28849751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its digits is 161280, while the sum is 44.

The square root of 28849751 is about 5371.1964216550. The cubic root of 28849751 is about 306.7001744787.

The spelling of 28849751 in words is "twenty-eight million, eight hundred forty-nine thousand, seven hundred fifty-one".