76430445 has 96 divisors (see below), whose sum is σ = 161642880. Its totient is φ = 30481920.

The previous prime is 76430443. The next prime is 76430461. The reversal of 76430445 is 54403467.

It is a happy number.

It is not a de Polignac number, because 76430445 - 2¹ = 76430443 is a prime.

It is a super-2 number, since 2×76430445² = 11683225845796050, 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 (76430443) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 181335 + ... + 181755.

It is an arithmetic number, because the mean of its divisors is an integer number (1683780).

Almost surely, 2^76430445 is an apocalyptic number.

It is an amenable number.

76430445 is an abundant number, since it is smaller than the sum of its proper divisors (85212435).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76430445 is a wasteful number, since it uses less digits than its factorization.

76430445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 76430445 is about 8742.4507433557. The cubic root of 76430445 is about 424.3805416076.

The spelling of 76430445 in words is "seventy-six million, four hundred thirty thousand, four hundred forty-five".