47240000 has 70 divisors (see below), whose sum is σ = 117239034. Its totient is φ = 18880000.

The previous prime is 47239987. The next prime is 47240027. The reversal of 47240000 is 4274.

It can be written as a sum of positive squares in 5 ways, for example, as 8202496 + 39037504 = 2864^2 + 6248^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39410 + ... + 40590.

Almost surely, 2^47240000 is an apocalyptic number.

47240000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58619517).

47240000 is an abundant number, since it is smaller than the sum of its proper divisors (69999034).

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

47240000 is an equidigital number, since it uses as much as digits as its factorization.

47240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 47240000 is about 6873.1361109758. The cubic root of 47240000 is about 361.4958336759.

Adding to 47240000 its reverse (4274), we get a palindrome (47244274).

The spelling of 47240000 in words is "forty-seven million, two hundred forty thousand".