47681340 has 96 divisors (see below), whose sum is σ = 154151424. Its totient is φ = 10786560.

The previous prime is 47681329. The next prime is 47681357. The reversal of 47681340 is 4318674.

It is a super-4 number, since 4×47681340⁴ (a number of 32 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44410 + ... + 45470.

It is an arithmetic number, because the mean of its divisors is an integer number (1605744).

Almost surely, 2^47681340 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 47681340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77075712).

47681340 is an abundant number, since it is smaller than the sum of its proper divisors (106470084).

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

47681340 is a wasteful number, since it uses less digits than its factorization.

47681340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1185 counting only the distinct ones).

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

The square root of 47681340 is about 6905.1676301159. The cubic root of 47681340 is about 362.6181049964.

The spelling of 47681340 in words is "forty-seven million, six hundred eighty-one thousand, three hundred forty".