71830450 has 24 divisors (see below), whose sum is σ = 140638320. Its totient is φ = 27219600.

The previous prime is 71830433. The next prime is 71830453. The reversal of 71830450 is 5403817.

It is a super-2 number, since 2×71830450² = 10319227094405000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71830453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36856 + ... + 38755.

It is an arithmetic number, because the mean of its divisors is an integer number (5859930).

Almost surely, 2^71830450 is an apocalyptic number.

71830450 is a deficient number, since it is larger than the sum of its proper divisors (68807870).

71830450 is a wasteful number, since it uses less digits than its factorization.

71830450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75642 (or 75637 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 71830450 is about 8475.2846559865. The cubic root of 71830450 is about 415.6899540446.

The spelling of 71830450 in words is "seventy-one million, eight hundred thirty thousand, four hundred fifty".