1401430320 has 120 divisors (see below), whose sum is σ = 4718968800. Its totient is φ = 372722688.

The previous prime is 1401430301. The next prime is 1401430333. The reversal of 1401430320 is 230341041.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 1401430293 and 1401430302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292101 + ... + 296859.

It is an arithmetic number, because the mean of its divisors is an integer number (39324740).

Almost surely, 2^1401430320 is an apocalyptic number.

1401430320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401430320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359484400).

1401430320 is an abundant number, since it is smaller than the sum of its proper divisors (3317538480).

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

1401430320 is a wasteful number, since it uses less digits than its factorization.

1401430320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187 (or 5178 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1401430320 is about 37435.6824433588. The cubic root of 1401430320 is about 1119.0697845968.

Adding to 1401430320 its reverse (230341041), we get a palindrome (1631771361).

The spelling of 1401430320 in words is "one billion, four hundred one million, four hundred thirty thousand, three hundred twenty".