284745945 has 32 divisors (see below), whose sum is σ = 506404224. Its totient is φ = 135449600.

The previous prime is 284745919. The next prime is 284745947. The reversal of 284745945 is 549547482.

It is not a de Polignac number, because 284745945 - 2⁷ = 284745817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 284745894 and 284745903.

It is not an unprimeable number, because it can be changed into a prime (284745947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7536 + ... + 25025.

It is an arithmetic number, because the mean of its divisors is an integer number (15825132).

Almost surely, 2^284745945 is an apocalyptic number.

It is an amenable number.

284745945 is a deficient number, since it is larger than the sum of its proper divisors (221658279).

284745945 is a wasteful number, since it uses less digits than its factorization.

284745945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32633.

The product of its digits is 1612800, while the sum is 48.

The square root of 284745945 is about 16874.4168788139. The cubic root of 284745945 is about 657.8888349511. Note that the first 4 decimals are identical.

The spelling of 284745945 in words is "two hundred eighty-four million, seven hundred forty-five thousand, nine hundred forty-five".