215145080 has 32 divisors (see below), whose sum is σ = 484928640. Its totient is φ = 85906560.

The previous prime is 215145067. The next prime is 215145083. The reversal of 215145080 is 80541512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215145083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19850 + ... + 28710.

It is an arithmetic number, because the mean of its divisors is an integer number (15154020).

Almost surely, 2^215145080 is an apocalyptic number.

215145080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215145080 is an abundant number, since it is smaller than the sum of its proper divisors (269783560).

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

215145080 is a wasteful number, since it uses less digits than its factorization.

215145080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479 (or 9475 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 215145080 is about 14667.8246512562. The cubic root of 215145080 is about 599.2073607402.

Adding to 215145080 its reverse (80541512), we get a palindrome (295686592).

The spelling of 215145080 in words is "two hundred fifteen million, one hundred forty-five thousand, eighty".