402030297 has 40 divisors (see below), whose sum is σ = 651492072. Its totient is φ = 246067200.

The previous prime is 402030247. The next prime is 402030313. The reversal of 402030297 is 792030204.

It can be written as a sum of positive squares in 4 ways, for example, as 1390041 + 400640256 = 1179^2 + 20016^2 .

It is not a de Polignac number, because 402030297 - 2²² = 397835993 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 402030297.

It is not an unprimeable number, because it can be changed into a prime (402030247) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52897 + ... + 60017.

Almost surely, 2^402030297 is an apocalyptic number.

It is an amenable number.

402030297 is a deficient number, since it is larger than the sum of its proper divisors (249461775).

402030297 is a wasteful number, since it uses less digits than its factorization.

402030297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7191 (or 7182 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 402030297 is about 20050.6931800374. The cubic root of 402030297 is about 738.0508095099.

The spelling of 402030297 in words is "four hundred two million, thirty thousand, two hundred ninety-seven".