1264004 has 18 divisors (see below), whose sum is σ = 2573550. Its totient is φ = 541632.

The previous prime is 1263979. The next prime is 1264009. The reversal of 1264004 is 4004621.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 9604 = 1120^2 + 98^2 .

It is a super-2 number, since 2×1264004² = 3195412224032, which contains 22 as substring.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1264009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3029 + ... + 3420.

It is an arithmetic number, because the mean of its divisors is an integer number (142975).

2^1264004 is an apocalyptic number.

1264004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1264004 is an abundant number, since it is smaller than the sum of its proper divisors (1309546).

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

1264004 is a wasteful number, since it uses less digits than its factorization.

1264004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6467 (or 6458 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1264004 is about 1124.2793247232. The cubic root of 1264004 is about 108.1225175681.

Adding to 1264004 its reverse (4004621), we get a palindrome (5268625).

The spelling of 1264004 in words is "one million, two hundred sixty-four thousand, four".