47768440 has 16 divisors (see below), whose sum is σ = 107479080. Its totient is φ = 19107360.

The previous prime is 47768437. The next prime is 47768459. The reversal of 47768440 is 4486774.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1194211 = 47768440 / (4 + 7 + 7 + 6 + 8 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 47768393 and 47768402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597066 + ... + 597145.

Almost surely, 2^47768440 is an apocalyptic number.

47768440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47768440 is an abundant number, since it is smaller than the sum of its proper divisors (59710640).

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

47768440 is a wasteful number, since it uses less digits than its factorization.

47768440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194222 (or 1194218 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 47768440 is about 6911.4716233231. The cubic root of 47768440 is about 362.8387701092.

The spelling of 47768440 in words is "forty-seven million, seven hundred sixty-eight thousand, four hundred forty".