71872430 has 32 divisors (see below), whose sum is σ = 156551616. Its totient is φ = 23192064.

The previous prime is 71872429. The next prime is 71872453. The reversal of 71872430 is 3427817.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29009 + ... + 31388.

It is an arithmetic number, because the mean of its divisors is an integer number (4892238).

Almost surely, 2^71872430 is an apocalyptic number.

71872430 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71872430 is an abundant number, since it is smaller than the sum of its proper divisors (84679186).

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

71872430 is a wasteful number, since it uses less digits than its factorization.

71872430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60428.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 71872430 is about 8477.7609072207. The cubic root of 71872430 is about 415.7709190848.

The spelling of 71872430 in words is "seventy-one million, eight hundred seventy-two thousand, four hundred thirty".