261190938 has 32 divisors (see below), whose sum is σ = 535092480. Its totient is φ = 84956480.

The previous prime is 261190927. The next prime is 261190939. The reversal of 261190938 is 839091162.

It is a junction number, because it is equal to n+sod(n) for n = 261190896 and 261190905.

It is not an unprimeable number, because it can be changed into a prime (261190939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108508 + ... + 110888.

It is an arithmetic number, because the mean of its divisors is an integer number (16721640).

Almost surely, 2^261190938 is an apocalyptic number.

261190938 is an abundant number, since it is smaller than the sum of its proper divisors (273901542).

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

261190938 is a wasteful number, since it uses less digits than its factorization.

261190938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 261190938 is about 16161.4027237737. The cubic root of 261190938 is about 639.2234543162.

The spelling of 261190938 in words is "two hundred sixty-one million, one hundred ninety thousand, nine hundred thirty-eight".