216377250 has 64 divisors (see below), whose sum is σ = 545515776. Its totient is φ = 57120000.

The previous prime is 216377209. The next prime is 216377279. The reversal of 216377250 is 52773612.

It is a super-2 number, since 2×216377250² = 93638228635125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75850 + ... + 78650.

It is an arithmetic number, because the mean of its divisors is an integer number (8523684).

Almost surely, 2^216377250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216377250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272757888).

216377250 is an abundant number, since it is smaller than the sum of its proper divisors (329138526).

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

216377250 is a wasteful number, since it uses less digits than its factorization.

216377250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 216377250 is about 14709.7671633510. The cubic root of 216377250 is about 600.3491023954.

The spelling of 216377250 in words is "two hundred sixteen million, three hundred seventy-seven thousand, two hundred fifty".