261417468 has 48 divisors (see below), whose sum is σ = 672189056. Its totient is φ = 78563520.

The previous prime is 261417467. The next prime is 261417479. The reversal of 261417468 is 864714162.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261417461) 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, 12778 + ... + 26193.

Almost surely, 2^261417468 is an apocalyptic number.

It is an amenable number.

261417468 is an abundant number, since it is smaller than the sum of its proper divisors (410771588).

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

261417468 is a wasteful number, since it uses less digits than its factorization.

261417468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39034 (or 39032 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 261417468 is about 16168.4095692805. The cubic root of 261417468 is about 639.4081996828.

The spelling of 261417468 in words is "two hundred sixty-one million, four hundred seventeen thousand, four hundred sixty-eight".