1401500320 has 48 divisors (see below), whose sum is σ = 3612053088. Its totient is φ = 509635840.

The previous prime is 1401500299. The next prime is 1401500323. The reversal of 1401500320 is 230051041.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1401500294 and 1401500303.

It is not an unprimeable number, because it can be changed into a prime (1401500323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396394 + ... + 399913.

It is an arithmetic number, because the mean of its divisors is an integer number (75251106).

Almost surely, 2^1401500320 is an apocalyptic number.

1401500320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401500320 is an abundant number, since it is smaller than the sum of its proper divisors (2210552768).

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

1401500320 is a wasteful number, since it uses less digits than its factorization.

1401500320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796333 (or 796325 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1401500320 is about 37436.6173685604. The cubic root of 1401500320 is about 1119.0884164140.

Adding to 1401500320 its reverse (230051041), we get a palindrome (1631551361).

The spelling of 1401500320 in words is "one billion, four hundred one million, five hundred thousand, three hundred twenty".