1264920 has 64 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 330624.

The previous prime is 1264909. The next prime is 1264933. The reversal of 1264920 is 294621.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9897 + ... + 10023.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2^1264920 is an apocalyptic number.

1264920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1264920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1935360).

1264920 is an abundant number, since it is smaller than the sum of its proper divisors (2605800).

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

1264920 is a wasteful number, since it uses less digits than its factorization.

1264920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1264920 is about 1124.6866230199. The cubic root of 1264920 is about 108.1486293819.

Subtracting from 1264920 its reverse (294621), we obtain a cube (970299 = 99³).

The spelling of 1264920 in words is "one million, two hundred sixty-four thousand, nine hundred twenty".