261327008 has 12 divisors (see below), whose sum is σ = 514487610. Its totient is φ = 130663488.

The previous prime is 261326981. The next prime is 261327019. The reversal of 261327008 is 800723162.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 161086864 + 100240144 = 12692^2 + 10012^2 .

It is a super-2 number, since 2×261327008² = 136583610220464128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4083203 + ... + 4083266.

Almost surely, 2^261327008 is an apocalyptic number.

It is an amenable number.

261327008 is a deficient number, since it is larger than the sum of its proper divisors (253160602).

261327008 is an equidigital number, since it uses as much as digits as its factorization.

261327008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166479 (or 8166471 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 261327008 is about 16165.6118968630. The cubic root of 261327008 is about 639.3344383039.

The spelling of 261327008 in words is "two hundred sixty-one million, three hundred twenty-seven thousand, eight".