261110428 has 12 divisors (see below), whose sum is σ = 457103752. Its totient is φ = 130509360.

The previous prime is 261110417. The next prime is 261110471. The reversal of 261110428 is 824011162.

261110428 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×261110428² = 136357311220686368, which contains 22 as substring.

261110428 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3526 + ... + 23122.

Almost surely, 2^261110428 is an apocalyptic number.

It is an amenable number.

261110428 is a deficient number, since it is larger than the sum of its proper divisors (195993324).

261110428 is a wasteful number, since it uses less digits than its factorization.

261110428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22932 (or 22930 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 261110428 is about 16158.9117207812. The cubic root of 261110428 is about 639.1577690754.

The spelling of 261110428 in words is "two hundred sixty-one million, one hundred ten thousand, four hundred twenty-eight".