212938738 has 24 divisors (see below), whose sum is σ = 351787968. Its totient is φ = 96472728.

The previous prime is 212938703. The next prime is 212938751. The reversal of 212938738 is 837839212.

212938738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212938738² = 90685812282065288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 212938694 and 212938703.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10195 + ... + 23017.

It is an arithmetic number, because the mean of its divisors is an integer number (14657832).

Almost surely, 2^212938738 is an apocalyptic number.

212938738 is a deficient number, since it is larger than the sum of its proper divisors (138849230).

212938738 is a wasteful number, since it uses less digits than its factorization.

212938738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886 (or 12867 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 212938738 is about 14592.4205668559. The cubic root of 212938738 is about 597.1520010406.

The spelling of 212938738 in words is "two hundred twelve million, nine hundred thirty-eight thousand, seven hundred thirty-eight".