47261980 has 36 divisors (see below), whose sum is σ = 102596760. Its totient is φ = 18287520.

The previous prime is 47261969. The next prime is 47261983. The reversal of 47261980 is 8916274.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47261983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17991 + ... + 20449.

It is an arithmetic number, because the mean of its divisors is an integer number (2849910).

Almost surely, 2^47261980 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 47261980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51298380).

47261980 is an abundant number, since it is smaller than the sum of its proper divisors (55334780).

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

47261980 is a wasteful number, since it uses less digits than its factorization.

47261980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 47261980 is about 6874.7349039799. The cubic root of 47261980 is about 361.5518910172.

The spelling of 47261980 in words is "forty-seven million, two hundred sixty-one thousand, nine hundred eighty".