47261664 has 96 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 14919552.

The previous prime is 47261663. The next prime is 47261681. The reversal of 47261664 is 46616274.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47261663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14977 + ... + 17855.

It is an arithmetic number, because the mean of its divisors is an integer number (1512000).

Almost surely, 2^47261664 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 47261664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72576000).

47261664 is an abundant number, since it is smaller than the sum of its proper divisors (97890336).

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

47261664 is a wasteful number, since it uses less digits than its factorization.

47261664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917 (or 2903 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 47261664 is about 6874.7119212371. The cubic root of 47261664 is about 361.5510852204.

The spelling of 47261664 in words is "forty-seven million, two hundred sixty-one thousand, six hundred sixty-four".