47021814 has 48 divisors (see below), whose sum is σ = 117225888. Its totient is φ = 13343616.

The previous prime is 47021797. The next prime is 47021851. The reversal of 47021814 is 41812074.

It is a super-2 number, since 2×47021814² = 4422101983701192, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18594 + ... + 20970.

It is an arithmetic number, because the mean of its divisors is an integer number (2442206).

Almost surely, 2^47021814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47021814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58612944).

47021814 is an abundant number, since it is smaller than the sum of its proper divisors (70204074).

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

47021814 is a wasteful number, since it uses less digits than its factorization.

47021814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 47021814 is about 6857.2453653052. The cubic root of 47021814 is about 360.9384312451.

Adding to 47021814 its reverse (41812074), we get a palindrome (88833888).

The spelling of 47021814 in words is "forty-seven million, twenty-one thousand, eight hundred fourteen".