202891240 has 32 divisors (see below), whose sum is σ = 456917760. Its totient is φ = 81083200.

The previous prime is 202891237. The next prime is 202891289. The reversal of 202891240 is 42198202.

It is a junction number, because it is equal to n+sod(n) for n = 202891199 and 202891208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73485 + ... + 76195.

It is an arithmetic number, because the mean of its divisors is an integer number (14278680).

Almost surely, 2^202891240 is an apocalyptic number.

202891240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202891240 is an abundant number, since it is smaller than the sum of its proper divisors (254026520).

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

202891240 is a wasteful number, since it uses less digits than its factorization.

202891240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4593 (or 4589 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 202891240 is about 14243.9896096564. The cubic root of 202891240 is about 587.6080887590.

The spelling of 202891240 in words is "two hundred two million, eight hundred ninety-one thousand, two hundred forty".