402197480 has 16 divisors (see below), whose sum is σ = 904944420. Its totient is φ = 160878976.

The previous prime is 402197479. The next prime is 402197489. The reversal of 402197480 is 84791204.

It can be written as a sum of positive squares in 2 ways, for example, as 354117124 + 48080356 = 18818^2 + 6934^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402197480.

It is not an unprimeable number, because it can be changed into a prime (402197489) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5027429 + ... + 5027508.

Almost surely, 2^402197480 is an apocalyptic number.

402197480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402197480 is an abundant number, since it is smaller than the sum of its proper divisors (502746940).

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

402197480 is a wasteful number, since it uses less digits than its factorization.

402197480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10054948 (or 10054944 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 402197480 is about 20054.8617546968. The cubic root of 402197480 is about 738.1531006802.

The spelling of 402197480 in words is "four hundred two million, one hundred ninety-seven thousand, four hundred eighty".