28723772744 has 16 divisors (see below), whose sum is σ = 53873331120. Its totient is φ = 14357551120.

The previous prime is 28723772729. The next prime is 28723772761. The reversal of 28723772744 is 44727732782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513662 + ... + 566829.

It is an arithmetic number, because the mean of its divisors is an integer number (3367083195).

Almost surely, 2^28723772744 is an apocalyptic number.

It is an amenable number.

28723772744 is a deficient number, since it is larger than the sum of its proper divisors (25149558376).

28723772744 is a wasteful number, since it uses less digits than its factorization.

28723772744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083820 (or 1083816 counting only the distinct ones).

The product of its digits is 7375872, while the sum is 53.

The spelling of 28723772744 in words is "twenty-eight billion, seven hundred twenty-three million, seven hundred seventy-two thousand, seven hundred forty-four".