452213440 has 56 divisors (see below), whose sum is σ = 1230672672. Its totient is φ = 155043840.

The previous prime is 452213407. The next prime is 452213483. The reversal of 452213440 is 44312254.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98701 + ... + 103180.

Almost surely, 2^452213440 is an apocalyptic number.

452213440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452213440 is an abundant number, since it is smaller than the sum of its proper divisors (778459232).

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

452213440 is a wasteful number, since it uses less digits than its factorization.

452213440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201905 (or 201895 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 452213440 is about 21265.3107195733. The cubic root of 452213440 is about 767.5638075737.

Adding to 452213440 its reverse (44312254), we get a palindrome (496525694).

The spelling of 452213440 in words is "four hundred fifty-two million, two hundred thirteen thousand, four hundred forty".