402866620 has 48 divisors (see below), whose sum is σ = 950725440. Its totient is φ = 142281216.

The previous prime is 402866617. The next prime is 402866623. The reversal of 402866620 is 26668204.

It is an interprime number because it is at equal distance from previous prime (402866617) and next prime (402866623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402866623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27705 + ... + 39664.

It is an arithmetic number, because the mean of its divisors is an integer number (19806780).

Almost surely, 2^402866620 is an apocalyptic number.

It is an amenable number.

402866620 is an abundant number, since it is smaller than the sum of its proper divisors (547858820).

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

402866620 is a wasteful number, since it uses less digits than its factorization.

402866620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67414 (or 67412 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 402866620 is about 20071.5375594397. The cubic root of 402866620 is about 738.5622314561.

The spelling of 402866620 in words is "four hundred two million, eight hundred sixty-six thousand, six hundred twenty".