261360022 has 24 divisors (see below), whose sum is σ = 497507400. Its totient is φ = 101828160.

The previous prime is 261359999. The next prime is 261360037. The reversal of 261360022 is 220063162.

It is a happy number.

It is a super-2 number, since 2×261360022² = 136618122199680968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 261359975 and 261360002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120147 + ... + 122302.

It is an arithmetic number, because the mean of its divisors is an integer number (20729475).

Almost surely, 2^261360022 is an apocalyptic number.

261360022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261360022 is a deficient number, since it is larger than the sum of its proper divisors (236147378).

261360022 is a wasteful number, since it uses less digits than its factorization.

261360022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242476 (or 242469 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 261360022 is about 16166.6329827828. The cubic root of 261360022 is about 639.3613599994.

The spelling of 261360022 in words is "two hundred sixty-one million, three hundred sixty thousand, twenty-two".