284472881 has 20 divisors (see below), whose sum is σ = 362068464. Its totient is φ = 221646600.

The previous prime is 284472869. The next prime is 284472973. The reversal of 284472881 is 188274482.

It is not a de Polignac number, because 284472881 - 2⁶ = 284472817 is a prime.

It is a super-2 number, since 2×284472881² = 161849640048880322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284472581) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21026 + ... + 31796.

Almost surely, 2^284472881 is an apocalyptic number.

It is an amenable number.

284472881 is a deficient number, since it is larger than the sum of its proper divisors (77595583).

284472881 is an equidigital number, since it uses as much as digits as its factorization.

284472881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10810 (or 10789 counting only the distinct ones).

The product of its digits is 229376, while the sum is 44.

The square root of 284472881 is about 16866.3238733282. The cubic root of 284472881 is about 657.6784682297.

The spelling of 284472881 in words is "two hundred eighty-four million, four hundred seventy-two thousand, eight hundred eighty-one".