64381234 has 48 divisors (see below), whose sum is σ = 110103840. Its totient is φ = 28123200.

The previous prime is 64381231. The next prime is 64381237. The reversal of 64381234 is 43218346.

64381234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64381231) and next prime (64381237).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 64381196 and 64381205.

It is not an unprimeable number, because it can be changed into a prime (64381231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1497217 + ... + 1497259.

It is an arithmetic number, because the mean of its divisors is an integer number (2293830).

Almost surely, 2^64381234 is an apocalyptic number.

64381234 is a deficient number, since it is larger than the sum of its proper divisors (45722606).

64381234 is a wasteful number, since it uses less digits than its factorization.

64381234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 136 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 64381234 is about 8023.7917470483. The cubic root of 64381234 is about 400.7926656653.

The spelling of 64381234 in words is "sixty-four million, three hundred eighty-one thousand, two hundred thirty-four".