402663030 has 128 divisors (see below), whose sum is σ = 1243938816. Its totient is φ = 80956800.

The previous prime is 402662993. The next prime is 402663031. The reversal of 402663030 is 30366204.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402663031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68799 + ... + 74421.

It is an arithmetic number, because the mean of its divisors is an integer number (9718272).

Almost surely, 2^402663030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402663030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621969408).

402663030 is an abundant number, since it is smaller than the sum of its proper divisors (841275786).

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

402663030 is a wasteful number, since it uses less digits than its factorization.

402663030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 402663030 is about 20066.4653090673. The cubic root of 402663030 is about 738.4377988579.

The spelling of 402663030 in words is "four hundred two million, six hundred sixty-three thousand, thirty".