38440340 has 48 divisors (see below), whose sum is σ = 82909008. Its totient is φ = 14966784.

The previous prime is 38440333. The next prime is 38440357. The reversal of 38440340 is 4304483.

It is a happy number.

38440340 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 8 ways, for example, as 9560464 + 28879876 = 3092^2 + 5374^2 .

It is a congruent number.

It is an unprimeable number.

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, 164864 + ... + 165096.

It is an arithmetic number, because the mean of its divisors is an integer number (1727271).

Almost surely, 2^38440340 is an apocalyptic number.

It is an amenable number.

38440340 is an abundant number, since it is smaller than the sum of its proper divisors (44468668).

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

38440340 is a wasteful number, since it uses less digits than its factorization.

38440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 38440340 is about 6200.0274192942. The cubic root of 38440340 is about 337.4911639205.

The spelling of 38440340 in words is "thirty-eight million, four hundred forty thousand, three hundred forty".