38426561 has 4 divisors (see below), whose sum is σ = 38807124. Its totient is φ = 38046000.

The previous prime is 38426539. The next prime is 38426573. The reversal of 38426561 is 16562483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35343025 + 3083536 = 5945^2 + 1756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38426561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38426501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190130 + ... + 190331.

It is an arithmetic number, because the mean of its divisors is an integer number (9701781).

Almost surely, 2^38426561 is an apocalyptic number.

It is an amenable number.

38426561 is a deficient number, since it is larger than the sum of its proper divisors (380563).

38426561 is a wasteful number, since it uses less digits than its factorization.

38426561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380562.

The product of its digits is 34560, while the sum is 35.

The square root of 38426561 is about 6198.9161149349. The cubic root of 38426561 is about 337.4508343562.

The spelling of 38426561 in words is "thirty-eight million, four hundred twenty-six thousand, five hundred sixty-one".