1401264 has 60 divisors (see below), whose sum is σ = 4042896. Its totient is φ = 452736.

The previous prime is 1401263. The next prime is 1401287. The reversal of 1401264 is 4621041.

1401264 is a `hidden beast` number, since 1 + 401 + 264 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5197 + ... + 5459.

2^1401264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021448).

1401264 is an abundant number, since it is smaller than the sum of its proper divisors (2641632).

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

1401264 is a wasteful number, since it uses less digits than its factorization.

1401264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 305 counting only the distinct ones).

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

The square root of 1401264 is about 1183.7499736008. The cubic root of 1401264 is about 111.9025512911.

The spelling of 1401264 in words is "one million, four hundred one thousand, two hundred sixty-four".