193256040 has 32 divisors (see below), whose sum is σ = 579768480. Its totient is φ = 51534912.

The previous prime is 193256023. The next prime is 193256081. The reversal of 193256040 is 40652391.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 193255989 and 193256007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805114 + ... + 805353.

It is an arithmetic number, because the mean of its divisors is an integer number (18117765).

Almost surely, 2^193256040 is an apocalyptic number.

193256040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193256040 is an abundant number, since it is smaller than the sum of its proper divisors (386512440).

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

193256040 is a wasteful number, since it uses less digits than its factorization.

193256040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610481 (or 1610477 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 193256040 is about 13901.6560164608. The cubic root of 193256040 is about 578.1550970063.

The spelling of 193256040 in words is "one hundred ninety-three million, two hundred fifty-six thousand, forty".