47457440 has 96 divisors (see below), whose sum is σ = 120294720. Its totient is φ = 17639424.

The previous prime is 47457439. The next prime is 47457457. The reversal of 47457440 is 4475474.

It is a super-2 number, since 2×47457440² = 4504417222707200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47457440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203564 + ... + 203796.

It is an arithmetic number, because the mean of its divisors is an integer number (1253070).

Almost surely, 2^47457440 is an apocalyptic number.

47457440 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 47457440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60147360).

47457440 is an abundant number, since it is smaller than the sum of its proper divisors (72837280).

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

47457440 is a wasteful number, since it uses less digits than its factorization.

47457440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 47457440 is about 6888.9360571862. The cubic root of 47457440 is about 362.0496253813.

The spelling of 47457440 in words is "forty-seven million, four hundred fifty-seven thousand, four hundred forty".