47744420 has 12 divisors (see below), whose sum is σ = 100263324. Its totient is φ = 19097760.

The previous prime is 47744419. The next prime is 47744423. The reversal of 47744420 is 2444774.

It can be written as a sum of positive squares in 2 ways, for example, as 37847104 + 9897316 = 6152^2 + 3146^2 .

It is a super-2 number, since 2×47744420² = 4559059282272800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (47744423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193591 + ... + 1193630.

It is an arithmetic number, because the mean of its divisors is an integer number (8355277).

Almost surely, 2^47744420 is an apocalyptic number.

It is an amenable number.

47744420 is an abundant number, since it is smaller than the sum of its proper divisors (52518904).

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

47744420 is a wasteful number, since it uses less digits than its factorization.

47744420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387230 (or 2387228 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 47744420 is about 6909.7337141166. The cubic root of 47744420 is about 362.7779429990. Note that the first 3 decimals are identical.

The spelling of 47744420 in words is "forty-seven million, seven hundred forty-four thousand, four hundred twenty".