28740767 has 12 divisors (see below), whose sum is σ = 31744440. Its totient is φ = 26001360.

The previous prime is 28740743. The next prime is 28740773. The reversal of 28740767 is 76704782.

It is not a de Polignac number, because 28740767 - 2¹⁰ = 28739743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28740737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32108 + ... + 32990.

It is an arithmetic number, because the mean of its divisors is an integer number (2645370).

Almost surely, 2^28740767 is an apocalyptic number.

28740767 is a deficient number, since it is larger than the sum of its proper divisors (3003673).

28740767 is a wasteful number, since it uses less digits than its factorization.

28740767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 28740767 is about 5361.0415965557. The cubic root of 28740767 is about 306.3134861025.

The spelling of 28740767 in words is "twenty-eight million, seven hundred forty thousand, seven hundred sixty-seven".