1000401264 has 60 divisors (see below), whose sum is σ = 2875417896. Its totient is φ = 324452736.

The previous prime is 1000401257. The next prime is 1000401277. The reversal of 1000401264 is 4621040001.

1000401264 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 401 + 264 = 666.

1000401264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 88554 + ... + 99209.

Almost surely, 2^1000401264 is an apocalyptic number.

It is an amenable number.

1000401264 is an abundant number, since it is smaller than the sum of its proper divisors (1875016632).

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

1000401264 is a wasteful number, since it uses less digits than its factorization.

1000401264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187814 (or 187805 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1000401264 is about 31629.1205062676. The cubic root of 1000401264 is about 1000.1337367803.

Adding to 1000401264 its reverse (4621040001), we get a palindrome (5621441265).

The spelling of 1000401264 in words is "one billion, four hundred one thousand, two hundred sixty-four".