632540402 has 16 divisors (see below), whose sum is σ = 1057031640. Its totient is φ = 281874432.

The previous prime is 632540393. The next prime is 632540423. The reversal of 632540402 is 204045236.

It can be written as a sum of positive squares in 4 ways, for example, as 422261401 + 210279001 = 20549^2 + 14501^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 418703 + ... + 420210.

Almost surely, 2^632540402 is an apocalyptic number.

632540402 is a deficient number, since it is larger than the sum of its proper divisors (424491238).

632540402 is a wasteful number, since it uses less digits than its factorization.

632540402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838957.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 632540402 is about 25150.3559020543. The cubic root of 632540402 is about 858.4126126372.

Adding to 632540402 its reverse (204045236), we get a palindrome (836585638).

The spelling of 632540402 in words is "six hundred thirty-two million, five hundred forty thousand, four hundred two".