47490878 has 4 divisors (see below), whose sum is σ = 71236320. Its totient is φ = 23745438.

The previous prime is 47490871. The next prime is 47490889. The reversal of 47490878 is 87809474.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47490871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11872718 + ... + 11872721.

It is an arithmetic number, because the mean of its divisors is an integer number (17809080).

Almost surely, 2^47490878 is an apocalyptic number.

47490878 is a deficient number, since it is larger than the sum of its proper divisors (23745442).

47490878 is a wasteful number, since it uses less digits than its factorization.

47490878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23745441.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 47490878 is about 6891.3625648343. The cubic root of 47490878 is about 362.1346375043.

The spelling of 47490878 in words is "forty-seven million, four hundred ninety thousand, eight hundred seventy-eight".