47780424 has 48 divisors (see below), whose sum is σ = 133585920. Its totient is φ = 15412320.

The previous prime is 47780417. The next prime is 47780443. The reversal of 47780424 is 42408774.

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, 8472 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (2783040).

Almost surely, 2^47780424 is an apocalyptic number.

It is an amenable number.

47780424 is an abundant number, since it is smaller than the sum of its proper divisors (85805496).

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

47780424 is a wasteful number, since it uses less digits than its factorization.

47780424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21450 (or 21443 counting only the distinct ones).

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

The square root of 47780424 is about 6912.3385333764. The cubic root of 47780424 is about 362.8691101988.

The spelling of 47780424 in words is "forty-seven million, seven hundred eighty thousand, four hundred twenty-four".