38691456 has 64 divisors (see below), whose sum is σ = 108838080. Its totient is φ = 12136448.

The previous prime is 38691449. The next prime is 38691461. The reversal of 38691456 is 65419683.

It is a tau number, because it is divible by the number of its divisors (64).

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, 3565 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (1700595).

Almost surely, 2^38691456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38691456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54419040).

38691456 is an abundant number, since it is smaller than the sum of its proper divisors (70146624).

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

38691456 is a wasteful number, since it uses less digits than its factorization.

38691456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961 (or 5949 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 38691456 is about 6220.2456543130. The cubic root of 38691456 is about 338.2244695468.

The spelling of 38691456 in words is "thirty-eight million, six hundred ninety-one thousand, four hundred fifty-six".