452115640 has 32 divisors (see below), whose sum is σ = 1070802000. Its totient is φ = 171327744.

The previous prime is 452115619. The next prime is 452115647. The reversal of 452115640 is 46511254.

It is a junction number, because it is equal to n+sod(n) for n = 452115599 and 452115608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452115647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296685 + ... + 298204.

Almost surely, 2^452115640 is an apocalyptic number.

452115640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452115640 is an abundant number, since it is smaller than the sum of its proper divisors (618686360).

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

452115640 is a wasteful number, since it uses less digits than its factorization.

452115640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594919 (or 594915 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 452115640 is about 21263.0110755744. The cubic root of 452115640 is about 767.5084700229.

Adding to 452115640 its reverse (46511254), we get a palindrome (498626894).

The spelling of 452115640 in words is "four hundred fifty-two million, one hundred fifteen thousand, six hundred forty".