402202240 has 64 divisors (see below), whose sum is σ = 1048943520. Its totient is φ = 146252800.

The previous prime is 402202237. The next prime is 402202253. The reversal of 402202240 is 42202204.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×402202240² = 323533283722035200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21526 + ... + 35605.

Almost surely, 2^402202240 is an apocalyptic number.

402202240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402202240 is an abundant number, since it is smaller than the sum of its proper divisors (646741280).

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

402202240 is a wasteful number, since it uses less digits than its factorization.

402202240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57161 (or 57149 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 402202240 is about 20054.9804288112. The cubic root of 402202240 is about 738.1560126783.

Adding to 402202240 its reverse (42202204), we get a palindrome (444404444).

The spelling of 402202240 in words is "four hundred two million, two hundred two thousand, two hundred forty".