213027780 has 96 divisors (see below), whose sum is σ = 686407680. Its totient is φ = 48355200.

The previous prime is 213027767. The next prime is 213027781. The reversal of 213027780 is 87720312.

213027780 = T₄₈₇ + T₄₈₈ + ... + T₁₁₁₆.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (213027781) 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 31 ways as a sum of consecutive naturals, for example, 61741 + ... + 65099.

It is an arithmetic number, because the mean of its divisors is an integer number (7150080).

Almost surely, 2^213027780 is an apocalyptic number.

213027780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213027780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343203840).

213027780 is an abundant number, since it is smaller than the sum of its proper divisors (473379900).

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

213027780 is a wasteful number, since it uses less digits than its factorization.

213027780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529 (or 3527 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 213027780 is about 14595.4712154147. The cubic root of 213027780 is about 597.2352240360.

The spelling of 213027780 in words is "two hundred thirteen million, twenty-seven thousand, seven hundred eighty".