1308840236 has 12 divisors (see below), whose sum is σ = 2498695080. Its totient is φ = 594927360.

The previous prime is 1308840229. The next prime is 1308840293. The reversal of 1308840236 is 6320488031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1308840196 and 1308840205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14873141 + ... + 14873228.

It is an arithmetic number, because the mean of its divisors is an integer number (208224590).

Almost surely, 2^1308840236 is an apocalyptic number.

It is an amenable number.

1308840236 is a deficient number, since it is larger than the sum of its proper divisors (1189854844).

1308840236 is a wasteful number, since it uses less digits than its factorization.

1308840236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29746384 (or 29746382 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1308840236 is about 36177.8970643679. The cubic root of 1308840236 is about 1093.8611864285.

The spelling of 1308840236 in words is "one billion, three hundred eight million, eight hundred forty thousand, two hundred thirty-six".