194157216 has 192 divisors, whose sum is σ = 638668800. Its totient is φ = 56851200.

The previous prime is 194157211. The next prime is 194157307. The reversal of 194157216 is 612751491.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (15120) is a multiple of the sum of its prime factors (720).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194157211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294295 + ... + 294953.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^194157216 is an apocalyptic number.

194157216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194157216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319334400).

194157216 is an abundant number, since it is smaller than the sum of its proper divisors (444511584).

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

194157216 is a wasteful number, since it uses less digits than its factorization.

194157216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 706 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 194157216 is about 13934.0308597333. The cubic root of 194157216 is about 579.0523725076.

The spelling of 194157216 in words is "one hundred ninety-four million, one hundred fifty-seven thousand, two hundred sixteen".