213856748 has 12 divisors (see below), whose sum is σ = 427713552. Its totient is φ = 91652880.

The previous prime is 213856739. The next prime is 213856793. The reversal of 213856748 is 847658312.

213856748 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 213856699 and 213856708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3818843 + ... + 3818898.

It is an arithmetic number, because the mean of its divisors is an integer number (35642796).

Almost surely, 2^213856748 is an apocalyptic number.

213856748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

213856748 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213856748 is a wasteful number, since it uses less digits than its factorization.

213856748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637752 (or 7637750 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 213856748 is about 14623.8417661024. The cubic root of 213856748 is about 598.0089072994.

The spelling of 213856748 in words is "two hundred thirteen million, eight hundred fifty-six thousand, seven hundred forty-eight".