402630465 has 48 divisors (see below), whose sum is σ = 690528960. Its totient is φ = 200279040.

The previous prime is 402630451. The next prime is 402630467. The reversal of 402630465 is 564036204.

It is not a de Polignac number, because 402630465 - 2¹⁰ = 402629441 is a prime.

It is a super-2 number, since 2×402630465² = 324222582692232450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402630467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 567531 + ... + 568239.

It is an arithmetic number, because the mean of its divisors is an integer number (14386020).

Almost surely, 2^402630465 is an apocalyptic number.

It is an amenable number.

402630465 is a deficient number, since it is larger than the sum of its proper divisors (287898495).

402630465 is a wasteful number, since it uses less digits than its factorization.

402630465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 402630465 is about 20065.6538642527. The cubic root of 402630465 is about 738.4178914966.

Adding to 402630465 its reverse (564036204), we get a palindrome (966666669).

The spelling of 402630465 in words is "four hundred two million, six hundred thirty thousand, four hundred sixty-five".