1321908 has 24 divisors (see below), whose sum is σ = 3525312. Its totient is φ = 377664.

The previous prime is 1321897. The next prime is 1321919. The reversal of 1321908 is 8091231.

It is an interprime number because it is at equal distance from previous prime (1321897) and next prime (1321919).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7785 + ... + 7952.

It is an arithmetic number, because the mean of its divisors is an integer number (146888).

2^1321908 is an apocalyptic number.

It is an amenable number.

1321908 is an abundant number, since it is smaller than the sum of its proper divisors (2203404).

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

1321908 is a wasteful number, since it uses less digits than its factorization.

1321908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15751 (or 15749 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1321908 is about 1149.7425798847. The cubic root of 1321908 is about 109.7489591937.

The spelling of 1321908 in words is "one million, three hundred twenty-one thousand, nine hundred eight".