38978445 has 32 divisors (see below), whose sum is σ = 71000064. Its totient is φ = 18075200.

The previous prime is 38978417. The next prime is 38978447. The reversal of 38978445 is 54487983.

It is not a de Polignac number, because 38978445 - 2⁹ = 38977933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38978394 and 38978403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38978447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1341 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (2218752).

Almost surely, 2^38978445 is an apocalyptic number.

It is an amenable number.

38978445 is a deficient number, since it is larger than the sum of its proper divisors (32021619).

38978445 is a wasteful number, since it uses less digits than its factorization.

38978445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313.

The product of its digits is 967680, while the sum is 48.

The square root of 38978445 is about 6243.2719786983. The cubic root of 38978445 is about 339.0586562385.

The spelling of 38978445 in words is "thirty-eight million, nine hundred seventy-eight thousand, four hundred forty-five".