402680446 has 8 divisors (see below), whose sum is σ = 690309360. Its totient is φ = 172577328.

The previous prime is 402680437. The next prime is 402680449. The reversal of 402680446 is 644086204.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402680449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14381431 + ... + 14381458.

It is an arithmetic number, because the mean of its divisors is an integer number (86288670).

Almost surely, 2^402680446 is an apocalyptic number.

402680446 is a deficient number, since it is larger than the sum of its proper divisors (287628914).

402680446 is a wasteful number, since it uses less digits than its factorization.

402680446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28762898.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 402680446 is about 20066.8992622179. The cubic root of 402680446 is about 738.4484450197.

The spelling of 402680446 in words is "four hundred two million, six hundred eighty thousand, four hundred forty-six".