38541540 has 24 divisors (see below), whose sum is σ = 107916480. Its totient is φ = 10277728.

The previous prime is 38541527. The next prime is 38541541. The reversal of 38541540 is 4514583.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 38541498 and 38541507.

It is not an unprimeable number, because it can be changed into a prime (38541541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321120 + ... + 321239.

It is an arithmetic number, because the mean of its divisors is an integer number (4496520).

Almost surely, 2^38541540 is an apocalyptic number.

38541540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38541540 is an abundant number, since it is smaller than the sum of its proper divisors (69374940).

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

38541540 is a wasteful number, since it uses less digits than its factorization.

38541540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642371 (or 642369 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 38541540 is about 6208.1833091493. The cubic root of 38541540 is about 337.7870698845.

The spelling of 38541540 in words is "thirty-eight million, five hundred forty-one thousand, five hundred forty".