47151864 has 48 divisors (see below), whose sum is σ = 128578320. Its totient is φ = 15609600.

The previous prime is 47151859. The next prime is 47151869. The reversal of 47151864 is 46815174.

It is a happy number.

47151864 is a `hidden beast` number, since 471 + 5 + 186 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (47151859) and next prime (47151869).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47151869) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8704 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (2678715).

Almost surely, 2^47151864 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 47151864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64289160).

47151864 is an abundant number, since it is smaller than the sum of its proper divisors (81426456).

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

47151864 is a wasteful number, since it uses less digits than its factorization.

47151864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500 (or 4493 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 47151864 is about 6866.7214884543. The cubic root of 47151864 is about 361.2708786119.

The spelling of 47151864 in words is "forty-seven million, one hundred fifty-one thousand, eight hundred sixty-four".