47155836 has 144 divisors (see below), whose sum is σ = 143001600. Its totient is φ = 11975040.

The previous prime is 47155831. The next prime is 47155859. The reversal of 47155836 is 63855174.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 47155794 and 47155803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47155831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236865 + ... + 237063.

Almost surely, 2^47155836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47155836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71500800).

47155836 is an abundant number, since it is smaller than the sum of its proper divisors (95845764).

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

47155836 is a wasteful number, since it uses less digits than its factorization.

47155836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 255 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 47155836 is about 6867.0107033556. The cubic root of 47155836 is about 361.2810226269.

The spelling of 47155836 in words is "forty-seven million, one hundred fifty-five thousand, eight hundred thirty-six".