215146982 has 4 divisors (see below), whose sum is σ = 322720476. Its totient is φ = 107573490.

The previous prime is 215146979. The next prime is 215146993. The reversal of 215146982 is 289641512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53786744 + ... + 53786747.

It is an arithmetic number, because the mean of its divisors is an integer number (80680119).

Almost surely, 2^215146982 is an apocalyptic number.

215146982 is a deficient number, since it is larger than the sum of its proper divisors (107573494).

215146982 is a wasteful number, since it uses less digits than its factorization.

215146982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107573493.

The product of its digits is 34560, while the sum is 38.

The square root of 215146982 is about 14667.8894869030. The cubic root of 215146982 is about 599.2091265084.

The spelling of 215146982 in words is "two hundred fifteen million, one hundred forty-six thousand, nine hundred eighty-two".