47281340 has 12 divisors (see below), whose sum is σ = 99290856. Its totient is φ = 18912528.

The previous prime is 47281331. The next prime is 47281349. The reversal of 47281340 is 4318274.

It is an interprime number because it is at equal distance from previous prime (47281331) and next prime (47281349).

It is a super-2 number, since 2×47281340² = 4471050224391200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47281349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182014 + ... + 1182053.

It is an arithmetic number, because the mean of its divisors is an integer number (8274238).

Almost surely, 2^47281340 is an apocalyptic number.

It is an amenable number.

47281340 is an abundant number, since it is smaller than the sum of its proper divisors (52009516).

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

47281340 is a wasteful number, since it uses less digits than its factorization.

47281340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364076 (or 2364074 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 47281340 is about 6876.1428141073. The cubic root of 47281340 is about 361.6012519698.

The spelling of 47281340 in words is "forty-seven million, two hundred eighty-one thousand, three hundred forty".