38197644 has 12 divisors (see below), whose sum is σ = 89127864. Its totient is φ = 12732544.

The previous prime is 38197639. The next prime is 38197661. The reversal of 38197644 is 44679183.

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

It is a junction number, because it is equal to n+sod(n) for n = 38197596 and 38197605.

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, 1591557 + ... + 1591580.

It is an arithmetic number, because the mean of its divisors is an integer number (7427322).

Almost surely, 2^38197644 is an apocalyptic number.

It is an amenable number.

38197644 is an abundant number, since it is smaller than the sum of its proper divisors (50930220).

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

38197644 is a wasteful number, since it uses less digits than its factorization.

38197644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183144 (or 3183142 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 38197644 is about 6180.4242572820. The cubic root of 38197644 is about 336.7794052174.

The spelling of 38197644 in words is "thirty-eight million, one hundred ninety-seven thousand, six hundred forty-four".