216125240 has 32 divisors (see below), whose sum is σ = 486751680. Its totient is φ = 86366592.

The previous prime is 216125219. The next prime is 216125291. The reversal of 216125240 is 42521612.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55022 + ... + 58818.

It is an arithmetic number, because the mean of its divisors is an integer number (15210990).

Almost surely, 2^216125240 is an apocalyptic number.

216125240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216125240 is an abundant number, since it is smaller than the sum of its proper divisors (270626440).

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

216125240 is a wasteful number, since it uses less digits than its factorization.

216125240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231 (or 5227 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 216125240 is about 14701.1985905912. The cubic root of 216125240 is about 600.1159405578.

Adding to 216125240 its reverse (42521612), we get a palindrome (258646852).

The spelling of 216125240 in words is "two hundred sixteen million, one hundred twenty-five thousand, two hundred forty".