215077238 has 4 divisors (see below), whose sum is σ = 322615860. Its totient is φ = 107538618.

The previous prime is 215077237. The next prime is 215077249. The reversal of 215077238 is 832770512.

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

It is a junction number, because it is equal to n+sod(n) for n = 215077198 and 215077207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215077237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53769308 + ... + 53769311.

It is an arithmetic number, because the mean of its divisors is an integer number (80653965).

Almost surely, 2^215077238 is an apocalyptic number.

215077238 is a deficient number, since it is larger than the sum of its proper divisors (107538622).

215077238 is a wasteful number, since it uses less digits than its factorization.

215077238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107538621.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 215077238 is about 14665.5118560519. The cubic root of 215077238 is about 599.1443711529.

The spelling of 215077238 in words is "two hundred fifteen million, seventy-seven thousand, two hundred thirty-eight".