47800944 has 60 divisors (see below), whose sum is σ = 134808336. Its totient is φ = 15810816.

The previous prime is 47800943. The next prime is 47800967. The reversal of 47800944 is 44900874.

It is a super-2 number, since 2×47800944² = 4569860494582272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47800899 and 47800908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47800943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18517 + ... + 20939.

Almost surely, 2^47800944 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 47800944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67404168).

47800944 is an abundant number, since it is smaller than the sum of its proper divisors (87007392).

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

47800944 is a wasteful number, since it uses less digits than its factorization.

47800944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 47800944 is about 6913.8226763492. The cubic root of 47800944 is about 362.9210492415.

The spelling of 47800944 in words is "forty-seven million, eight hundred thousand, nine hundred forty-four".