455346640 has 80 divisors (see below), whose sum is σ = 1262562048. Its totient is φ = 149326848.

The previous prime is 455346611. The next prime is 455346659. The reversal of 455346640 is 46643554.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 455346640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4797 + ... + 30556.

Almost surely, 2^455346640 is an apocalyptic number.

455346640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455346640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631281024).

455346640 is an abundant number, since it is smaller than the sum of its proper divisors (807215408).

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

455346640 is a wasteful number, since it uses less digits than its factorization.

455346640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35396 (or 35390 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 455346640 is about 21338.8528276475. The cubic root of 455346640 is about 769.3324399152.

The spelling of 455346640 in words is "four hundred fifty-five million, three hundred forty-six thousand, six hundred forty".