47878611 has 24 divisors (see below), whose sum is σ = 71902992. Its totient is φ = 28300800.

The previous prime is 47878591. The next prime is 47878639. The reversal of 47878611 is 11687874.

It is a happy number.

It is not a de Polignac number, because 47878611 - 2⁶ = 47878547 is a prime.

It is a super-2 number, since 2×47878611² = 4584722782578642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47878811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13275 + ... + 16491.

It is an arithmetic number, because the mean of its divisors is an integer number (2995958).

Almost surely, 2^47878611 is an apocalyptic number.

47878611 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

47878611 is a deficient number, since it is larger than the sum of its proper divisors (24024381).

47878611 is a wasteful number, since it uses less digits than its factorization.

47878611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3272 counting only the distinct ones).

The product of its digits is 75264, while the sum is 42.

The square root of 47878611 is about 6919.4371880956. The cubic root of 47878611 is about 363.1175009881.

The spelling of 47878611 in words is "forty-seven million, eight hundred seventy-eight thousand, six hundred eleven".