28078747334 has 16 divisors (see below), whose sum is σ = 46420725456. Its totient is φ = 12631488000.

The previous prime is 28078747309. The next prime is 28078747349. The reversal of 28078747334 is 43374787082.

It is a happy number.

It is a super-2 number, since 2×28078747334² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6576767 + ... + 6581034.

It is an arithmetic number, because the mean of its divisors is an integer number (2901295341).

Almost surely, 2^28078747334 is an apocalyptic number.

28078747334 is a deficient number, since it is larger than the sum of its proper divisors (18341978122).

28078747334 is a wasteful number, since it uses less digits than its factorization.

28078747334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13157911.

The product of its (nonzero) digits is 6322176, while the sum is 53.

The spelling of 28078747334 in words is "twenty-eight billion, seventy-eight million, seven hundred forty-seven thousand, three hundred thirty-four".