47211380 has 48 divisors (see below), whose sum is σ = 105670656. Its totient is φ = 17656320.

The previous prime is 47211347. The next prime is 47211407. The reversal of 47211380 is 8311274.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64577 + ... + 65303.

It is an arithmetic number, because the mean of its divisors is an integer number (2201472).

Almost surely, 2^47211380 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 47211380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52835328).

47211380 is an abundant number, since it is smaller than the sum of its proper divisors (58459276).

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

47211380 is a wasteful number, since it uses less digits than its factorization.

47211380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 47211380 is about 6871.0537765324. The cubic root of 47211380 is about 361.4228157475.

The spelling of 47211380 in words is "forty-seven million, two hundred eleven thousand, three hundred eighty".