168502040 has 64 divisors (see below), whose sum is σ = 434410560. Its totient is φ = 57623040.

The previous prime is 168502039. The next prime is 168502049. The reversal of 168502040 is 40205861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168502049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204830 + ... + 205650.

It is an arithmetic number, because the mean of its divisors is an integer number (6787665).

Almost surely, 2^168502040 is an apocalyptic number.

168502040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168502040 is an abundant number, since it is smaller than the sum of its proper divisors (265908520).

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

168502040 is a wasteful number, since it uses less digits than its factorization.

168502040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 168502040 is about 12980.8335633733. The cubic root of 168502040 is about 552.3339276872. Note that the first 3 decimals are identical.

The spelling of 168502040 in words is "one hundred sixty-eight million, five hundred two thousand, forty".