202768540 has 24 divisors (see below), whose sum is σ = 458569440. Its totient is φ = 74868288.

The previous prime is 202768507. The next prime is 202768541. The reversal of 202768540 is 45867202.

It is a super-2 number, since 2×202768540² = 82230161627463200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202768496 and 202768505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202768541) 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, 389680 + ... + 390199.

It is an arithmetic number, because the mean of its divisors is an integer number (19107060).

Almost surely, 2^202768540 is an apocalyptic number.

202768540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202768540 is an abundant number, since it is smaller than the sum of its proper divisors (255800900).

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

202768540 is a wasteful number, since it uses less digits than its factorization.

202768540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779901 (or 779899 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 202768540 is about 14239.6818784691. The cubic root of 202768540 is about 587.4896114053.

The spelling of 202768540 in words is "two hundred two million, seven hundred sixty-eight thousand, five hundred forty".