1401636 has 12 divisors (see below), whose sum is σ = 3270512. Its totient is φ = 467208.

The previous prime is 1401629. The next prime is 1401641. The reversal of 1401636 is 6361041.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58390 + ... + 58413.

2^1401636 is an apocalyptic number.

It is an amenable number.

1401636 is an abundant number, since it is smaller than the sum of its proper divisors (1868876).

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

1401636 is a wasteful number, since it uses less digits than its factorization.

1401636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116810 (or 116808 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1401636 is about 1183.9070909493. The cubic root of 1401636 is about 111.9124528433.

Adding to 1401636 its reverse (6361041), we get a palindrome (7762677).

The spelling of 1401636 in words is "one million, four hundred one thousand, six hundred thirty-six".