402984450 has 144 divisors (see below), whose sum is σ = 1221067680. Its totient is φ = 97653600.

The previous prime is 402984437. The next prime is 402984457. The reversal of 402984450 is 54489204.

It is not an unprimeable number, because it can be changed into a prime (402984457) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 162117 + ... + 164583.

Almost surely, 2^402984450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402984450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610533840).

402984450 is an abundant number, since it is smaller than the sum of its proper divisors (818083230).

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

402984450 is a wasteful number, since it uses less digits than its factorization.

402984450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2488 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 402984450 is about 20074.4725958118. The cubic root of 402984450 is about 738.6342290690.

The spelling of 402984450 in words is "four hundred two million, nine hundred eighty-four thousand, four hundred fifty".