47978430 has 32 divisors (see below), whose sum is σ = 116273664. Its totient is φ = 12669216.

The previous prime is 47978417. The next prime is 47978443. The reversal of 47978430 is 3487974.

It is an interprime number because it is at equal distance from previous prime (47978417) and next prime (47978443).

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, 4674 + ... + 10853.

It is an arithmetic number, because the mean of its divisors is an integer number (3633552).

Almost surely, 2^47978430 is an apocalyptic number.

47978430 is an abundant number, since it is smaller than the sum of its proper divisors (68295234).

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

47978430 is a wasteful number, since it uses less digits than its factorization.

47978430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15640.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 47978430 is about 6926.6463746896. The cubic root of 47978430 is about 363.3696725056.

The spelling of 47978430 in words is "forty-seven million, nine hundred seventy-eight thousand, four hundred thirty".