450234390 has 32 divisors (see below), whose sum is σ = 1115421696. Its totient is φ = 116189280.

The previous prime is 450234383. The next prime is 450234391. The reversal of 450234390 is 93432054.

It is a super-2 number, since 2×450234390² = 405422011877344200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450234391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241132 + ... + 242991.

It is an arithmetic number, because the mean of its divisors is an integer number (34856928).

Almost surely, 2^450234390 is an apocalyptic number.

450234390 is an abundant number, since it is smaller than the sum of its proper divisors (665187306).

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

450234390 is a wasteful number, since it uses less digits than its factorization.

450234390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484164.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 450234390 is about 21218.7273416668. The cubic root of 450234390 is about 766.4424576466.

The spelling of 450234390 in words is "four hundred fifty million, two hundred thirty-four thousand, three hundred ninety".