28742261835 has 32 divisors (see below), whose sum is σ = 52563658752. Its totient is φ = 13137724800.

The previous prime is 28742261827. The next prime is 28742261839. The reversal of 28742261835 is 53816224782.

It is not a de Polignac number, because 28742261835 - 2³ = 28742261827 is a prime.

It is a super-2 number, since 2×28742261835² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28742261839) 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, 1576542 + ... + 1594668.

It is an arithmetic number, because the mean of its divisors is an integer number (1642614336).

Almost surely, 2^28742261835 is an apocalyptic number.

28742261835 is a deficient number, since it is larger than the sum of its proper divisors (23821396917).

28742261835 is a wasteful number, since it uses less digits than its factorization.

28742261835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33243.

The product of its digits is 1290240, while the sum is 48.

The spelling of 28742261835 in words is "twenty-eight billion, seven hundred forty-two million, two hundred sixty-one thousand, eight hundred thirty-five".