213077782 has 4 divisors (see below), whose sum is σ = 319616676. Its totient is φ = 106538890.

The previous prime is 213077759. The next prime is 213077789. The reversal of 213077782 is 287770312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213077789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53269444 + ... + 53269447.

It is an arithmetic number, because the mean of its divisors is an integer number (79904169).

Almost surely, 2^213077782 is an apocalyptic number.

213077782 is a deficient number, since it is larger than the sum of its proper divisors (106538894).

213077782 is a wasteful number, since it uses less digits than its factorization.

213077782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106538893.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 213077782 is about 14597.1840435065. The cubic root of 213077782 is about 597.2819481761.

The spelling of 213077782 in words is "two hundred thirteen million, seventy-seven thousand, seven hundred eighty-two".