213647748 has 12 divisors (see below), whose sum is σ = 498511440. Its totient is φ = 71215912.

The previous prime is 213647729. The next prime is 213647767. The reversal of 213647748 is 847746312.

213647748 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 (213647729) and next prime (213647767).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8901978 + ... + 8902001.

It is an arithmetic number, because the mean of its divisors is an integer number (41542620).

Almost surely, 2^213647748 is an apocalyptic number.

It is an amenable number.

213647748 is an abundant number, since it is smaller than the sum of its proper divisors (284863692).

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

213647748 is a wasteful number, since it uses less digits than its factorization.

213647748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17803986 (or 17803984 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 213647748 is about 14616.6941542881. The cubic root of 213647748 is about 597.8140344853.

The spelling of 213647748 in words is "two hundred thirteen million, six hundred forty-seven thousand, seven hundred forty-eight".