47274240 has 144 divisors (see below), whose sum is σ = 162767808. Its totient is φ = 11624448.

The previous prime is 47274221. The next prime is 47274247. The reversal of 47274240 is 4247274.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 47274198 and 47274207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47274247) 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, 49447 + ... + 50393.

It is an arithmetic number, because the mean of its divisors is an integer number (1130332).

Almost surely, 2^47274240 is an apocalyptic number.

47274240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47274240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81383904).

47274240 is an abundant number, since it is smaller than the sum of its proper divisors (115493568).

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

47274240 is a wasteful number, since it uses less digits than its factorization.

47274240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 47274240 is about 6875.6265169074. The cubic root of 47274240 is about 361.5831511193.

The spelling of 47274240 in words is "forty-seven million, two hundred seventy-four thousand, two hundred forty".