202881540 has 24 divisors (see below), whose sum is σ = 568068480. Its totient is φ = 54101728.

The previous prime is 202881533. The next prime is 202881541. The reversal of 202881540 is 45188202.

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 = 202881498 and 202881507.

It is not an unprimeable number, because it can be changed into a prime (202881541) 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, 1690620 + ... + 1690739.

It is an arithmetic number, because the mean of its divisors is an integer number (23669520).

Almost surely, 2^202881540 is an apocalyptic number.

202881540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202881540 is an abundant number, since it is smaller than the sum of its proper divisors (365186940).

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

202881540 is a wasteful number, since it uses less digits than its factorization.

202881540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381371 (or 3381369 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 202881540 is about 14243.6491110951. The cubic root of 202881540 is about 587.5987243177.

The spelling of 202881540 in words is "two hundred two million, eight hundred eighty-one thousand, five hundred forty".