34781838 has 32 divisors (see below), whose sum is σ = 85618176. Its totient is φ = 9173088.

The previous prime is 34781827. The next prime is 34781839. The reversal of 34781838 is 83818743.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 34781838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34781839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31306 + ... + 32397.

It is an arithmetic number, because the mean of its divisors is an integer number (2675568).

Almost surely, 2^34781838 is an apocalyptic number.

34781838 is an abundant number, since it is smaller than the sum of its proper divisors (50836338).

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

34781838 is a wasteful number, since it uses less digits than its factorization.

34781838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63728.

The product of its digits is 129024, while the sum is 42.

The square root of 34781838 is about 5897.6129069311. The cubic root of 34781838 is about 326.4255736462.

The spelling of 34781838 in words is "thirty-four million, seven hundred eighty-one thousand, eight hundred thirty-eight".