47405220 has 24 divisors (see below), whose sum is σ = 132734784. Its totient is φ = 12641376.

The previous prime is 47405213. The next prime is 47405249. The reversal of 47405220 is 2250474.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394984 + ... + 395103.

It is an arithmetic number, because the mean of its divisors is an integer number (5530616).

Almost surely, 2^47405220 is an apocalyptic number.

It is an amenable number.

47405220 is an abundant number, since it is smaller than the sum of its proper divisors (85329564).

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

47405220 is a wasteful number, since it uses less digits than its factorization.

47405220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790099 (or 790097 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 47405220 is about 6885.1448786500. The cubic root of 47405220 is about 361.9167823526.

Adding to 47405220 its reverse (2250474), we get a palindrome (49655694).

The spelling of 47405220 in words is "forty-seven million, four hundred five thousand, two hundred twenty".