454978782 has 20 divisors (see below), whose sum is σ = 1019489856. Its totient is φ = 151659540.

The previous prime is 454978759. The next prime is 454978787. The reversal of 454978782 is 287879454.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454978787) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1404094 + ... + 1404417.

Almost surely, 2^454978782 is an apocalyptic number.

454978782 is an abundant number, since it is smaller than the sum of its proper divisors (564511074).

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

454978782 is a wasteful number, since it uses less digits than its factorization.

454978782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808525 (or 2808516 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 454978782 is about 21330.2316443118. The cubic root of 454978782 is about 769.1252121962.

The spelling of 454978782 in words is "four hundred fifty-four million, nine hundred seventy-eight thousand, seven hundred eighty-two".