38401644 has 12 divisors (see below), whose sum is σ = 89603864. Its totient is φ = 12800544.

The previous prime is 38401639. The next prime is 38401673. The reversal of 38401644 is 44610483.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1600057 + ... + 1600080.

Almost surely, 2^38401644 is an apocalyptic number.

It is an amenable number.

38401644 is an abundant number, since it is smaller than the sum of its proper divisors (51202220).

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

38401644 is a wasteful number, since it uses less digits than its factorization.

38401644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200144 (or 3200142 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 38401644 is about 6196.9060021917. The cubic root of 38401644 is about 337.3778806468.

The spelling of 38401644 in words is "thirty-eight million, four hundred one thousand, six hundred forty-four".