211974448 has 20 divisors (see below), whose sum is σ = 469372240. Its totient is φ = 90846144.

The previous prime is 211974439. The next prime is 211974449. The reversal of 211974448 is 844479112.

It is a self number, because there is not a number n which added to its sum of digits gives 211974448.

It is not an unprimeable number, because it can be changed into a prime (211974449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946203 + ... + 946426.

It is an arithmetic number, because the mean of its divisors is an integer number (23468612).

Almost surely, 2^211974448 is an apocalyptic number.

211974448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

211974448 is an abundant number, since it is smaller than the sum of its proper divisors (257397792).

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

211974448 is a wasteful number, since it uses less digits than its factorization.

211974448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892644 (or 1892638 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 211974448 is about 14559.3422928373. The cubic root of 211974448 is about 596.2492388799.

It can be divided in two parts, 2119 and 74448, that added together give a palindrome (76567).

The spelling of 211974448 in words is "two hundred eleven million, nine hundred seventy-four thousand, four hundred forty-eight".