47124220 has 48 divisors (see below), whose sum is σ = 116268768. Its totient is φ = 15816960.

The previous prime is 47124169. The next prime is 47124223. The reversal of 47124220 is 2242174.

It is a happy number.

It is a super-2 number, since 2×47124220² = 4441384221216800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 47124191 and 47124200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47124223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5379 + ... + 11098.

It is an arithmetic number, because the mean of its divisors is an integer number (2422266).

Almost surely, 2^47124220 is an apocalyptic number.

It is an amenable number.

47124220 is an abundant number, since it is smaller than the sum of its proper divisors (69144548).

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

47124220 is a wasteful number, since it uses less digits than its factorization.

47124220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16510 (or 16508 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 47124220 is about 6864.7082967887. The cubic root of 47124220 is about 361.2002633441.

Adding to 47124220 its reverse (2242174), we get a palindrome (49366394).

The spelling of 47124220 in words is "forty-seven million, one hundred twenty-four thousand, two hundred twenty".