451940202 has 128 divisors (see below), whose sum is σ = 1208217600. Its totient is φ = 122430528.

The previous prime is 451940201. The next prime is 451940221. The reversal of 451940202 is 202049154.

451940202 is a `hidden beast` number, since 451 + 9 + 4 + 0 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (451940201) 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, 1973424 + ... + 1973652.

It is an arithmetic number, because the mean of its divisors is an integer number (9439200).

Almost surely, 2^451940202 is an apocalyptic number.

451940202 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 451940202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604108800).

451940202 is an abundant number, since it is smaller than the sum of its proper divisors (756277398).

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

451940202 is a wasteful number, since it uses less digits than its factorization.

451940202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 451940202 is about 21258.8852482909. The cubic root of 451940202 is about 767.4091830564.

Adding to 451940202 its reverse (202049154), we get a palindrome (653989356).

The spelling of 451940202 in words is "four hundred fifty-one million, nine hundred forty thousand, two hundred two".