47815020 has 288 divisors, whose sum is σ = 176117760. Its totient is φ = 10368000.

The previous prime is 47815013. The next prime is 47815037. The reversal of 47815020 is 2051874.

It is a super-2 number, since 2×47815020² = 4572552275200800, which contains 22 as substring.

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, 1166200 + ... + 1166240.

It is an arithmetic number, because the mean of its divisors is an integer number (611520).

Almost surely, 2^47815020 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 47815020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

47815020 is an abundant number, since it is smaller than the sum of its proper divisors (128302740).

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

47815020 is a wasteful number, since it uses less digits than its factorization.

47815020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 47815020 is about 6914.8405621533. The cubic root of 47815020 is about 362.9566690076.

Adding to 47815020 its reverse (2051874), we get a palindrome (49866894).

It can be divided in two parts, 4781 and 5020, that added together give a square (9801 = 99²).

The spelling of 47815020 in words is "forty-seven million, eight hundred fifteen thousand, twenty".