38810642 has 16 divisors (see below), whose sum is σ = 64857240. Its totient is φ = 17294592.

The previous prime is 38810587. The next prime is 38810687. The reversal of 38810642 is 24601883.

It can be written as a sum of positive squares in 4 ways, for example, as 19722481 + 19088161 = 4441^2 + 4369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38810599 and 38810608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24983 + ... + 26490.

Almost surely, 2^38810642 is an apocalyptic number.

38810642 is a deficient number, since it is larger than the sum of its proper divisors (26046598).

38810642 is a wasteful number, since it uses less digits than its factorization.

38810642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51517.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 38810642 is about 6229.8187774605. The cubic root of 38810642 is about 338.5714048844.

The spelling of 38810642 in words is "thirty-eight million, eight hundred ten thousand, six hundred forty-two".