202402440 has 192 divisors, whose sum is σ = 700876800. Its totient is φ = 50512896.

The previous prime is 202402439. The next prime is 202402463. The reversal of 202402440 is 44204202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 868564 + ... + 868796.

It is an arithmetic number, because the mean of its divisors is an integer number (3650400).

Almost surely, 2^202402440 is an apocalyptic number.

202402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202402440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350438400).

202402440 is an abundant number, since it is smaller than the sum of its proper divisors (498474360).

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

202402440 is a wasteful number, since it uses less digits than its factorization.

202402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 202402440 is about 14226.8211488020. The cubic root of 202402440 is about 587.1358262150.

Adding to 202402440 its reverse (44204202), we get a palindrome (246606642).

The spelling of 202402440 in words is "two hundred two million, four hundred two thousand, four hundred forty".