213428630 has 32 divisors (see below), whose sum is σ = 391849920. Its totient is φ = 83675520.

The previous prime is 213428623. The next prime is 213428671. The reversal of 213428630 is 36824312.

213428630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213428593 and 213428602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267392 + ... + 268188.

It is an arithmetic number, because the mean of its divisors is an integer number (12245310).

Almost surely, 2^213428630 is an apocalyptic number.

213428630 is a deficient number, since it is larger than the sum of its proper divisors (178421290).

213428630 is a wasteful number, since it uses less digits than its factorization.

213428630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 213428630 is about 14609.1967609448. The cubic root of 213428630 is about 597.6095910743.

The spelling of 213428630 in words is "two hundred thirteen million, four hundred twenty-eight thousand, six hundred thirty".