1401618272 has 24 divisors (see below), whose sum is σ = 2760727536. Its totient is φ = 700481152.

The previous prime is 1401618271. The next prime is 1401618293. The reversal of 1401618272 is 2728161041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401618271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68498 + ... + 86574.

It is an arithmetic number, because the mean of its divisors is an integer number (115030314).

Almost surely, 2^1401618272 is an apocalyptic number.

It is an amenable number.

1401618272 is a deficient number, since it is larger than the sum of its proper divisors (1359109264).

1401618272 is a wasteful number, since it uses less digits than its factorization.

1401618272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20510 (or 20502 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1401618272 is about 37438.1926914214. The cubic root of 1401618272 is about 1119.1198101550.

The spelling of 1401618272 in words is "one billion, four hundred one million, six hundred eighteen thousand, two hundred seventy-two".