28019142965 has 24 divisors (see below), whose sum is σ = 38902627680. Its totient is φ = 19305047520.

The previous prime is 28019142941. The next prime is 28019142967. The reversal of 28019142965 is 56924191082.

It is a happy number.

It is not a de Polignac number, because 28019142965 - 2⁸ = 28019142709 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28019142967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1207259 + ... + 1230248.

It is an arithmetic number, because the mean of its divisors is an integer number (1620942820).

Almost surely, 2^28019142965 is an apocalyptic number.

It is an amenable number.

28019142965 is a deficient number, since it is larger than the sum of its proper divisors (10883484715).

28019142965 is a wasteful number, since it uses less digits than its factorization.

28019142965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437553 (or 2437542 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 28019142965 in words is "twenty-eight billion, nineteen million, one hundred forty-two thousand, nine hundred sixty-five".