153685240 has 32 divisors (see below), whose sum is σ = 348526080. Its totient is φ = 60988032.

The previous prime is 153685237. The next prime is 153685247. The reversal of 153685240 is 42586351.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 153685196 and 153685205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153685247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10047 + ... + 20206.

It is an arithmetic number, because the mean of its divisors is an integer number (10891440).

Almost surely, 2^153685240 is an apocalyptic number.

153685240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153685240 is an abundant number, since it is smaller than the sum of its proper divisors (194840840).

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

153685240 is a wasteful number, since it uses less digits than its factorization.

153685240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30391 (or 30387 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 153685240 is about 12396.9851173582. The cubic root of 153685240 is about 535.6454085247.

The spelling of 153685240 in words is "one hundred fifty-three million, six hundred eighty-five thousand, two hundred forty".