28740951 has 6 divisors (see below), whose sum is σ = 41514720. Its totient is φ = 19160628.

The previous prime is 28740919. The next prime is 28740979. The reversal of 28740951 is 15904782.

It is not a de Polignac number, because 28740951 - 2⁵ = 28740919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28740451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1596711 + ... + 1596728.

It is an arithmetic number, because the mean of its divisors is an integer number (6919120).

Almost surely, 2^28740951 is an apocalyptic number.

28740951 is a deficient number, since it is larger than the sum of its proper divisors (12773769).

28740951 is a wasteful number, since it uses less digits than its factorization.

28740951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193445 (or 3193442 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 28740951 is about 5361.0587573725. The cubic root of 28740951 is about 306.3141397798.

The spelling of 28740951 in words is "twenty-eight million, seven hundred forty thousand, nine hundred fifty-one".