28065690724 has 12 divisors (see below), whose sum is σ = 49128363648. Its totient is φ = 14029015400.

The previous prime is 28065690701. The next prime is 28065690727. The reversal of 28065690724 is 42709656082.

It is not an unprimeable number, because it can be changed into a prime (28065690727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940972 + ... + 970339.

It is an arithmetic number, because the mean of its divisors is an integer number (4094030304).

Almost surely, 2^28065690724 is an apocalyptic number.

It is an amenable number.

28065690724 is a deficient number, since it is larger than the sum of its proper divisors (21062672924).

28065690724 is a wasteful number, since it uses less digits than its factorization.

28065690724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914986 (or 1914984 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28065690724 in words is "twenty-eight billion, sixty-five million, six hundred ninety thousand, seven hundred twenty-four".