1401353220 has 24 divisors (see below), whose sum is σ = 3923789184. Its totient is φ = 373694176.

The previous prime is 1401353203. The next prime is 1401353237. The reversal of 1401353220 is 223531041.

It is an interprime number because it is at equal distance from previous prime (1401353203) and next prime (1401353237).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11677884 + ... + 11678003.

It is an arithmetic number, because the mean of its divisors is an integer number (163491216).

Almost surely, 2^1401353220 is an apocalyptic number.

1401353220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401353220 is an abundant number, since it is smaller than the sum of its proper divisors (2522435964).

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

1401353220 is a wasteful number, since it uses less digits than its factorization.

1401353220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23355899 (or 23355897 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1401353220 is about 37434.6526630073. The cubic root of 1401353220 is about 1119.0492622629.

Adding to 1401353220 its reverse (223531041), we get a palindrome (1624884261).

The spelling of 1401353220 in words is "one billion, four hundred one million, three hundred fifty-three thousand, two hundred twenty".