458247640 has 16 divisors (see below), whose sum is σ = 1031057280. Its totient is φ = 183299040.

The previous prime is 458247613. The next prime is 458247649. The reversal of 458247640 is 46742854.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 11456191 = 458247640 / (4 + 5 + 8 + 2 + 4 + 7 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 458247593 and 458247602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (458247649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5728056 + ... + 5728135.

It is an arithmetic number, because the mean of its divisors is an integer number (64441080).

Almost surely, 2^458247640 is an apocalyptic number.

458247640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

458247640 is an abundant number, since it is smaller than the sum of its proper divisors (572809640).

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

458247640 is a wasteful number, since it uses less digits than its factorization.

458247640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456202 (or 11456198 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 458247640 is about 21406.7195058000. The cubic root of 458247640 is about 770.9627806045.

The spelling of 458247640 in words is "four hundred fifty-eight million, two hundred forty-seven thousand, six hundred forty".