194281920 has 336 divisors, whose sum is σ = 798819840. Its totient is φ = 42375168.

The previous prime is 194281907. The next prime is 194281937. The reversal of 194281920 is 29182491.

It is a tau number, because it is divible by the number of its divisors (336).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 463471 + ... + 463889.

It is an arithmetic number, because the mean of its divisors is an integer number (2377440).

Almost surely, 2^194281920 is an apocalyptic number.

194281920 is a gapful number since it is divisible by the number (10) 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 194281920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399409920).

194281920 is an abundant number, since it is smaller than the sum of its proper divisors (604537920).

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

194281920 is a wasteful number, since it uses less digits than its factorization.

194281920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 194281920 is about 13938.5049413486. The cubic root of 194281920 is about 579.1763179271.

The spelling of 194281920 in words is "one hundred ninety-four million, two hundred eighty-one thousand, nine hundred twenty".