47744280 has 48 divisors (see below), whose sum is σ = 155170080. Its totient is φ = 12731712.

The previous prime is 47744243. The next prime is 47744303. The reversal of 47744280 is 8244774.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65952 + ... + 66671.

It is an arithmetic number, because the mean of its divisors is an integer number (3232710).

Almost surely, 2^47744280 is an apocalyptic number.

47744280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47744280 is an abundant number, since it is smaller than the sum of its proper divisors (107425800).

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

47744280 is a wasteful number, since it uses less digits than its factorization.

47744280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132640 (or 132633 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 47744280 is about 6909.7235834728. The cubic root of 47744280 is about 362.7775884098. Note that the first 3 decimals are identical.

The spelling of 47744280 in words is "forty-seven million, seven hundred forty-four thousand, two hundred eighty".