5261909028 has 12 divisors (see below), whose sum is σ = 12277787760. Its totient is φ = 1753969672.

The previous prime is 5261909027. The next prime is 5261909047. The reversal of 5261909028 is 8209091625.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (5261909021) 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, 219246198 + ... + 219246221.

It is an arithmetic number, because the mean of its divisors is an integer number (1023148980).

Almost surely, 2^5261909028 is an apocalyptic number.

It is an amenable number.

5261909028 is an abundant number, since it is smaller than the sum of its proper divisors (7015878732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5261909028 is a wasteful number, since it uses less digits than its factorization.

5261909028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438492426 (or 438492424 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 5261909028 is about 72539.0172803575. The cubic root of 5261909028 is about 1739.3264918797.

The spelling of 5261909028 in words is "five billion, two hundred sixty-one million, nine hundred nine thousand, twenty-eight".