47431020 has 288 divisors, whose sum is σ = 178573248. Its totient is φ = 9289728.

The previous prime is 47431009. The next prime is 47431031. The reversal of 47431020 is 2013474.

It is an interprime number because it is at equal distance from previous prime (47431009) and next prime (47431031).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 649704 + ... + 649776.

It is an arithmetic number, because the mean of its divisors is an integer number (620046).

Almost surely, 2^47431020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47431020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89286624).

47431020 is an abundant number, since it is smaller than the sum of its proper divisors (131142228).

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

47431020 is a wasteful number, since it uses less digits than its factorization.

47431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 47431020 is about 6887.0182227144. The cubic root of 47431020 is about 361.9824274408.

Adding to 47431020 its reverse (2013474), we get a palindrome (49444494).

The spelling of 47431020 in words is "forty-seven million, four hundred thirty-one thousand, twenty".