216499748 has 6 divisors (see below), whose sum is σ = 378874566. Its totient is φ = 108249872.

The previous prime is 216499727. The next prime is 216499769. The reversal of 216499748 is 847994612.

216499748 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216499727) and next prime (216499769).

It can be written as a sum of positive squares in only one way, i.e., 187361344 + 29138404 = 13688^2 + 5398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216499696 and 216499705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27062465 + ... + 27062472.

It is an arithmetic number, because the mean of its divisors is an integer number (63145761).

Almost surely, 2^216499748 is an apocalyptic number.

It is an amenable number.

216499748 is a deficient number, since it is larger than the sum of its proper divisors (162374818).

216499748 is a wasteful number, since it uses less digits than its factorization.

216499748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54124941 (or 54124939 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 216499748 is about 14713.9304062511. The cubic root of 216499748 is about 600.4623732231.

The spelling of 216499748 in words is "two hundred sixteen million, four hundred ninety-nine thousand, seven hundred forty-eight".