38561538 has 8 divisors (see below), whose sum is σ = 77123088. Its totient is φ = 12853844.

The previous prime is 38561521. The next prime is 38561543. The reversal of 38561538 is 83516583.

It is a sphenic number, since it is the product of 3 distinct primes.

38561538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 38561496 and 38561505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213456 + ... + 3213467.

It is an arithmetic number, because the mean of its divisors is an integer number (9640386).

Almost surely, 2^38561538 is an apocalyptic number.

38561538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38561538 is a wasteful number, since it uses less digits than its factorization.

38561538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426928.

The product of its digits is 86400, while the sum is 39.

The square root of 38561538 is about 6209.7937163806. The cubic root of 38561538 is about 337.8454821659.

The spelling of 38561538 in words is "thirty-eight million, five hundred sixty-one thousand, five hundred thirty-eight".