76434321 has 16 divisors (see below), whose sum is σ = 109304640. Its totient is φ = 47361600.

The previous prime is 76434311. The next prime is 76434353. The reversal of 76434321 is 12343467.

It is not a de Polignac number, because 76434321 - 2⁶ = 76434257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76434301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9630 + ... + 15671.

It is an arithmetic number, because the mean of its divisors is an integer number (6831540).

Almost surely, 2^76434321 is an apocalyptic number.

It is an amenable number.

76434321 is a deficient number, since it is larger than the sum of its proper divisors (32870319).

76434321 is a wasteful number, since it uses less digits than its factorization.

76434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25376.

The product of its digits is 12096, while the sum is 30.

The square root of 76434321 is about 8742.6724175163. The cubic root of 76434321 is about 424.3877153247.

Adding to 76434321 its reverse (12343467), we get a palindrome (88777788).

The spelling of 76434321 in words is "seventy-six million, four hundred thirty-four thousand, three hundred twenty-one".