1264603400 has 48 divisors (see below), whose sum is σ = 2942557200. Its totient is φ = 505436480.

The previous prime is 1264603381. The next prime is 1264603433. The reversal of 1264603400 is 43064621.

It is a self number, because there is not a number n which added to its sum of digits gives 1264603400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 447191 + ... + 450009.

It is an arithmetic number, because the mean of its divisors is an integer number (61303275).

Almost surely, 2^1264603400 is an apocalyptic number.

1264603400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264603400 is an abundant number, since it is smaller than the sum of its proper divisors (1677953800).

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

1264603400 is a wasteful number, since it uses less digits than its factorization.

1264603400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078 (or 5069 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1264603400 is about 35561.2626322520. The cubic root of 1264603400 is about 1081.3960569844.

The spelling of 1264603400 in words is "one billion, two hundred sixty-four million, six hundred three thousand, four hundred".