130402408 has 8 divisors (see below), whose sum is σ = 244504530. Its totient is φ = 65201200.

The previous prime is 130402381. The next prime is 130402409. The reversal of 130402408 is 804204031.

It can be written as a sum of positive squares in only one way, i.e., 130370724 + 31684 = 11418^2 + 178^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (130402409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8150143 + ... + 8150158.

Almost surely, 2^130402408 is an apocalyptic number.

It is an amenable number.

130402408 is a deficient number, since it is larger than the sum of its proper divisors (114102122).

130402408 is a wasteful number, since it uses less digits than its factorization.

130402408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16300307 (or 16300303 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 130402408 is about 11419.3873741107. The cubic root of 130402408 is about 507.1018602391.

Adding to 130402408 its reverse (804204031), we get a palindrome (934606439).

The spelling of 130402408 in words is "one hundred thirty million, four hundred two thousand, four hundred eight".