28734151761 has 32 divisors (see below), whose sum is σ = 48661088000. Its totient is φ = 16415913600.

The previous prime is 28734151759. The next prime is 28734151807. The reversal of 28734151761 is 16715143782.

28734151761 is a `hidden beast` number, since 2 + 8 + 73 + 4 + 1 + 517 + 61 = 666.

It is not a de Polignac number, because 28734151761 - 2¹ = 28734151759 is a prime.

It is a super-2 number, since 2×28734151761² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28734151261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1015911 + ... + 1043811.

It is an arithmetic number, because the mean of its divisors is an integer number (1520659000).

Almost surely, 2^28734151761 is an apocalyptic number.

28734151761 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28734151761 is a deficient number, since it is larger than the sum of its proper divisors (19926936239).

28734151761 is a wasteful number, since it uses less digits than its factorization.

28734151761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33366 (or 33360 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The spelling of 28734151761 in words is "twenty-eight billion, seven hundred thirty-four million, one hundred fifty-one thousand, seven hundred sixty-one".