194831280 has 480 divisors, whose sum is σ = 817090560. Its totient is φ = 40642560.

The previous prime is 194831261. The next prime is 194831291. The reversal of 194831280 is 82138491.

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 95 ways as a sum of consecutive naturals, for example, 4530939 + ... + 4530981.

It is an arithmetic number, because the mean of its divisors is an integer number (1702272).

Almost surely, 2^194831280 is an apocalyptic number.

194831280 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 194831280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408545280).

194831280 is an abundant number, since it is smaller than the sum of its proper divisors (622259280).

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

194831280 is a wasteful number, since it uses less digits than its factorization.

194831280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 194831280 is about 13958.1975913798. The cubic root of 194831280 is about 579.7217055711.

The spelling of 194831280 in words is "one hundred ninety-four million, eight hundred thirty-one thousand, two hundred eighty".