34478381 has 16 divisors (see below), whose sum is σ = 40290048. Its totient is φ = 28896000.

The previous prime is 34478377. The next prime is 34478383. The reversal of 34478381 is 18387443.

It is not a de Polignac number, because 34478381 - 2² = 34478377 is a prime.

It is a super-2 number, since 2×34478381² = 2377517512762322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34478383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85781 + ... + 86181.

It is an arithmetic number, because the mean of its divisors is an integer number (2518128).

Almost surely, 2^34478381 is an apocalyptic number.

It is an amenable number.

34478381 is a deficient number, since it is larger than the sum of its proper divisors (5811667).

34478381 is a wasteful number, since it uses less digits than its factorization.

34478381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 64512, while the sum is 38.

The square root of 34478381 is about 5871.8294423459. The cubic root of 34478381 is about 325.4734905102.

The spelling of 34478381 in words is "thirty-four million, four hundred seventy-eight thousand, three hundred eighty-one".