261012092 has 24 divisors (see below), whose sum is σ = 504306432. Its totient is φ = 117210800.

The previous prime is 261012079. The next prime is 261012131. The reversal of 261012092 is 290210162.

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, 32084 + ... + 39387.

It is an arithmetic number, because the mean of its divisors is an integer number (21012768).

Almost surely, 2^261012092 is an apocalyptic number.

261012092 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261012092 is a deficient number, since it is larger than the sum of its proper divisors (243294340).

261012092 is a wasteful number, since it uses less digits than its factorization.

261012092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71569 (or 71567 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 261012092 is about 16155.8686550739. The cubic root of 261012092 is about 639.0775219162.

The spelling of 261012092 in words is "two hundred sixty-one million, twelve thousand, ninety-two".