1402232220 has 72 divisors (see below), whose sum is σ = 4261224240. Its totient is φ = 373244160.

The previous prime is 1402232219. The next prime is 1402232239. The reversal of 1402232220 is 222322041.

It is a super-2 number, since 2×1402232220² = 3932510397612256800, which contains 22 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 = 1402232193 and 1402232202.

It is a congruent number.

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, 95575 + ... + 109265.

It is an arithmetic number, because the mean of its divisors is an integer number (59183670).

Almost surely, 2^1402232220 is an apocalyptic number.

1402232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402232220 is an abundant number, since it is smaller than the sum of its proper divisors (2858992020).

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

1402232220 is a wasteful number, since it uses less digits than its factorization.

1402232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14275 (or 14270 counting only the distinct ones).

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

The square root of 1402232220 is about 37446.3912814039. The cubic root of 1402232220 is about 1119.2831882271.

Adding to 1402232220 its reverse (222322041), we get a palindrome (1624554261).

The spelling of 1402232220 in words is "one billion, four hundred two million, two hundred thirty-two thousand, two hundred twenty".