261534748 has 24 divisors (see below), whose sum is σ = 484323840. Its totient is φ = 123317040.

The previous prime is 261534727. The next prime is 261534751. The reversal of 261534748 is 847435162.

It is a super-2 number, since 2×261534748² = 136800848822847008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 261534748.

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, 13488 + ... + 26551.

It is an arithmetic number, because the mean of its divisors is an integer number (20180160).

Almost surely, 2^261534748 is an apocalyptic number.

It is an amenable number.

261534748 is a deficient number, since it is larger than the sum of its proper divisors (222789092).

261534748 is a wasteful number, since it uses less digits than its factorization.

261534748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40137 (or 40135 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 261534748 is about 16172.0359880876. The cubic root of 261534748 is about 639.5038048500.

The spelling of 261534748 in words is "two hundred sixty-one million, five hundred thirty-four thousand, seven hundred forty-eight".