455038638 has 32 divisors (see below), whose sum is σ = 971116800. Its totient is φ = 141725376.

The previous prime is 455038637. The next prime is 455038663. The reversal of 455038638 is 836830554.

It is a self number, because there is not a number n which added to its sum of digits gives 455038638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455038637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19018 + ... + 35661.

It is an arithmetic number, because the mean of its divisors is an integer number (30347400).

Almost surely, 2^455038638 is an apocalyptic number.

455038638 is an abundant number, since it is smaller than the sum of its proper divisors (516078162).

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

455038638 is a wasteful number, since it uses less digits than its factorization.

455038638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54776.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 455038638 is about 21331.6346771643. The cubic root of 455038638 is about 769.1589388532.

The spelling of 455038638 in words is "four hundred fifty-five million, thirty-eight thousand, six hundred thirty-eight".