1402402320 has 240 divisors, whose sum is σ = 5186668032. Its totient is φ = 336752640.

The previous prime is 1402402307. The next prime is 1402402327. The reversal of 1402402320 is 232042041.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-3 number, since 3×1402402320³ (a number of 28 digits) contains 333 as substring.

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 = 1402402293 and 1402402302.

It is not an unprimeable number, because it can be changed into a prime (1402402327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 894177 + ... + 895743.

Almost surely, 2^1402402320 is an apocalyptic number.

1402402320 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 1402402320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2593334016).

1402402320 is an abundant number, since it is smaller than the sum of its proper divisors (3784265712).

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

1402402320 is a wasteful number, since it uses less digits than its factorization.

1402402320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710 (or 1701 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1402402320 is about 37448.6624594257. The cubic root of 1402402320 is about 1119.3284452037.

Adding to 1402402320 its reverse (232042041), we get a palindrome (1634444361).

The spelling of 1402402320 in words is "one billion, four hundred two million, four hundred two thousand, three hundred twenty".