47446740 has 144 divisors (see below), whose sum is σ = 162279936. Its totient is φ = 11116800.

The previous prime is 47446727. The next prime is 47446741. The reversal of 47446740 is 4764474.

47446740 = 308² + 309² + ... + 555².

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

It is a junction number, because it is equal to n+sod(n) for n = 47446695 and 47446704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47446741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60994 + ... + 61766.

It is an arithmetic number, because the mean of its divisors is an integer number (1126944).

Almost surely, 2^47446740 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 47446740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81139968).

47446740 is an abundant number, since it is smaller than the sum of its proper divisors (114833196).

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

47446740 is a wasteful number, since it uses less digits than its factorization.

47446740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The square root of 47446740 is about 6888.1594058210. The cubic root of 47446740 is about 362.0224134754.

The spelling of 47446740 in words is "forty-seven million, four hundred forty-six thousand, seven hundred forty".