193420640 has 72 divisors (see below), whose sum is σ = 531582912. Its totient is φ = 66312960.

The previous prime is 193420603. The next prime is 193420649. The reversal of 193420640 is 46024391.

193420640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193420649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4496 + ... + 20175.

It is an arithmetic number, because the mean of its divisors is an integer number (7383096).

Almost surely, 2^193420640 is an apocalyptic number.

193420640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193420640 is an abundant number, since it is smaller than the sum of its proper divisors (338162272).

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

193420640 is a wasteful number, since it uses less digits than its factorization.

193420640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24700 (or 24685 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 193420640 is about 13907.5749144126. The cubic root of 193420640 is about 578.3191924794.

The spelling of 193420640 in words is "one hundred ninety-three million, four hundred twenty thousand, six hundred forty".