402180322 has 8 divisors (see below), whose sum is σ = 638757036. Its totient is φ = 189261312.

The previous prime is 402180319. The next prime is 402180347. The reversal of 402180322 is 223081204.

It can be written as a sum of positive squares in 2 ways, for example, as 339628041 + 62552281 = 18429^2 + 7909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×402180322² = 323498022808047368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402180293 and 402180302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5914383 + ... + 5914450.

Almost surely, 2^402180322 is an apocalyptic number.

402180322 is a deficient number, since it is larger than the sum of its proper divisors (236576714).

402180322 is a wasteful number, since it uses less digits than its factorization.

402180322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828852.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 402180322 is about 20054.4339735631. The cubic root of 402180322 is about 738.1426038376.

The spelling of 402180322 in words is "four hundred two million, one hundred eighty thousand, three hundred twenty-two".