213981580 has 24 divisors (see below), whose sum is σ = 452230128. Its totient is φ = 85046208.

The previous prime is 213981577. The next prime is 213981589. The reversal of 213981580 is 85189312.

It is not an unprimeable number, because it can be changed into a prime (213981589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30934 + ... + 37213.

It is an arithmetic number, because the mean of its divisors is an integer number (18842922).

Almost surely, 2^213981580 is an apocalyptic number.

213981580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213981580 is an abundant number, since it is smaller than the sum of its proper divisors (238248548).

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

213981580 is a wasteful number, since it uses less digits than its factorization.

213981580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68313 (or 68311 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 213981580 is about 14628.1092421406. The cubic root of 213981580 is about 598.1252408238.

The spelling of 213981580 in words is "two hundred thirteen million, nine hundred eighty-one thousand, five hundred eighty".