1264020 has 24 divisors (see below), whose sum is σ = 3539424. Its totient is φ = 337056.

The previous prime is 1264009. The next prime is 1264027. The reversal of 1264020 is 204621.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10474 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (147476).

2^1264020 is an apocalyptic number.

1264020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264020 is an abundant number, since it is smaller than the sum of its proper divisors (2275404).

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

1264020 is a wasteful number, since it uses less digits than its factorization.

1264020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21079 (or 21077 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1264020 is about 1124.2864403701. The cubic root of 1264020 is about 108.1229737778.

Adding to 1264020 its reverse (204621), we get a palindrome (1468641).

The spelling of 1264020 in words is "one million, two hundred sixty-four thousand, twenty".