1921264 has 10 divisors (see below), whose sum is σ = 3722480. Its totient is φ = 960624.

The previous prime is 1921253. The next prime is 1921267. The reversal of 1921264 is 4621291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60024 + ... + 60055.

It is an arithmetic number, because the mean of its divisors is an integer number (372248).

2^1921264 is an apocalyptic number.

It is an amenable number.

1921264 is a deficient number, since it is larger than the sum of its proper divisors (1801216).

1921264 is a wasteful number, since it uses less digits than its factorization.

1921264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120087 (or 120081 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 1921264 is about 1386.0966777249. The cubic root of 1921264 is about 124.3165688515.

The spelling of 1921264 in words is "one million, nine hundred twenty-one thousand, two hundred sixty-four".