193425408 has 260 divisors, whose sum is σ = 642239928. Its totient is φ = 57507840.

The previous prime is 193425383. The next prime is 193425409. The reversal of 193425408 is 804524391.

193425408 is a `hidden beast` number, since 193 + 425 + 40 + 8 = 666.

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

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193425409) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3649510 + ... + 3649562.

Almost surely, 2^193425408 is an apocalyptic number.

193425408 is a gapful number since it is divisible by the number (18) 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 193425408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321119964).

193425408 is an abundant number, since it is smaller than the sum of its proper divisors (448814520).

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

193425408 is an equidigital number, since it uses as much as digits as its factorization.

193425408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 193425408 is about 13907.7463307324. The cubic root of 193425408 is about 578.3239444770.

Adding to 193425408 its reverse (804524391), we get a palindrome (997949799).

The spelling of 193425408 in words is "one hundred ninety-three million, four hundred twenty-five thousand, four hundred eight".