38911628 has 24 divisors (see below), whose sum is σ = 78893472. Its totient is φ = 16447104.

The previous prime is 38911597. The next prime is 38911633. The reversal of 38911628 is 82611983.

38911628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38911628² = 3028229587220768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38911591 and 38911600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7475 + ... + 11562.

It is an arithmetic number, because the mean of its divisors is an integer number (3287228).

Almost surely, 2^38911628 is an apocalyptic number.

It is an amenable number.

38911628 is an abundant number, since it is smaller than the sum of its proper divisors (39981844).

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

38911628 is a wasteful number, since it uses less digits than its factorization.

38911628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19121 (or 19119 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 38911628 is about 6237.9185631106. The cubic root of 38911628 is about 338.8648068806.

The spelling of 38911628 in words is "thirty-eight million, nine hundred eleven thousand, six hundred twenty-eight".