47578740 has 48 divisors (see below), whose sum is σ = 145333440. Its totient is φ = 11534080.

The previous prime is 47578703. The next prime is 47578757. The reversal of 47578740 is 4787574.

It is a junction number, because it is equal to n+sod(n) for n = 47578692 and 47578701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35385 + ... + 36704.

It is an arithmetic number, because the mean of its divisors is an integer number (3027780).

Almost surely, 2^47578740 is an apocalyptic number.

It is an amenable number.

47578740 is an abundant number, since it is smaller than the sum of its proper divisors (97754700).

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

47578740 is a wasteful number, since it uses less digits than its factorization.

47578740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72112 (or 72110 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 47578740 is about 6897.7344106598. The cubic root of 47578740 is about 362.3578261328.

The spelling of 47578740 in words is "forty-seven million, five hundred seventy-eight thousand, seven hundred forty".