215029146 has 8 divisors (see below), whose sum is σ = 430058304. Its totient is φ = 71676380.

The previous prime is 215029123. The next prime is 215029147. The reversal of 215029146 is 641920512.

It is a sphenic number, since it is the product of 3 distinct primes.

215029146 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (215029147) 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 3 ways as a sum of consecutive naturals, for example, 17919090 + ... + 17919101.

It is an arithmetic number, because the mean of its divisors is an integer number (53757288).

Almost surely, 2^215029146 is an apocalyptic number.

215029146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

215029146 is a wasteful number, since it uses less digits than its factorization.

215029146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35838196.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 215029146 is about 14663.8721352854. The cubic root of 215029146 is about 599.0997109194.

Adding to 215029146 its reverse (641920512), we get a palindrome (856949658).

The spelling of 215029146 in words is "two hundred fifteen million, twenty-nine thousand, one hundred forty-six".