47821623 has 32 divisors (see below), whose sum is σ = 69795840. Its totient is φ = 29034720.

The previous prime is 47821603. The next prime is 47821637. The reversal of 47821623 is 32612874.

It is not a de Polignac number, because 47821623 - 2⁵ = 47821591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47821603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168840 + ... + 169122.

It is an arithmetic number, because the mean of its divisors is an integer number (2181120).

Almost surely, 2^47821623 is an apocalyptic number.

47821623 is a deficient number, since it is larger than the sum of its proper divisors (21974217).

47821623 is a wasteful number, since it uses less digits than its factorization.

47821623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419.

The product of its digits is 16128, while the sum is 33.

The square root of 47821623 is about 6915.3179970266. The cubic root of 47821623 is about 362.9733757006.

The spelling of 47821623 in words is "forty-seven million, eight hundred twenty-one thousand, six hundred twenty-three".