213074730 has 96 divisors (see below), whose sum is σ = 609156288. Its totient is φ = 51244800.

The previous prime is 213074699. The next prime is 213074731. The reversal of 213074730 is 37470312.

It is a junction number, because it is equal to n+sod(n) for n = 213074694 and 213074703.

It is not an unprimeable number, because it can be changed into a prime (213074731) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 134845 + ... + 136415.

It is an arithmetic number, because the mean of its divisors is an integer number (6345378).

Almost surely, 2^213074730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213074730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304578144).

213074730 is an abundant number, since it is smaller than the sum of its proper divisors (396081558).

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

213074730 is a wasteful number, since it uses less digits than its factorization.

213074730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 213074730 is about 14597.0795024210. The cubic root of 213074730 is about 597.2790964581.

The spelling of 213074730 in words is "two hundred thirteen million, seventy-four thousand, seven hundred thirty".