38540028 has 12 divisors (see below), whose sum is σ = 89926760. Its totient is φ = 12846672.

The previous prime is 38540027. The next prime is 38540057. The reversal of 38540028 is 82004583.

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 = 38539977 and 38540004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38540023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605823 + ... + 1605846.

Almost surely, 2^38540028 is an apocalyptic number.

It is an amenable number.

38540028 is an abundant number, since it is smaller than the sum of its proper divisors (51386732).

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

38540028 is a wasteful number, since it uses less digits than its factorization.

38540028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211676 (or 3211674 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 38540028 is about 6208.0615332002. The cubic root of 38540028 is about 337.7826526529.

The spelling of 38540028 in words is "thirty-eight million, five hundred forty thousand, twenty-eight".