193730940 has 120 divisors (see below), whose sum is σ = 654561600. Its totient is φ = 47682432.

The previous prime is 193730939. The next prime is 193730981. The reversal of 193730940 is 49037391.

193730940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×193730940² = 75063354226567200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 193730895 and 193730904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16461 + ... + 25659.

It is an arithmetic number, because the mean of its divisors is an integer number (5454680).

Almost surely, 2^193730940 is an apocalyptic number.

193730940 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 193730940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327280800).

193730940 is an abundant number, since it is smaller than the sum of its proper divisors (460830660).

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

193730940 is a wasteful number, since it uses less digits than its factorization.

193730940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233 (or 9222 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 193730940 is about 13918.7262348248. The cubic root of 193730940 is about 578.6282883566.

The spelling of 193730940 in words is "one hundred ninety-three million, seven hundred thirty thousand, nine hundred forty".