38611540 has 48 divisors (see below), whose sum is σ = 88905600. Its totient is φ = 13969280.

The previous prime is 38611537. The next prime is 38611541. The reversal of 38611540 is 4511683.

It is a junction number, because it is equal to n+sod(n) for n = 38611499 and 38611508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38611541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64161 + ... + 64759.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^38611540 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 38611540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44452800).

38611540 is an abundant number, since it is smaller than the sum of its proper divisors (50294060).

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

38611540 is a wasteful number, since it uses less digits than its factorization.

38611540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 38611540 is about 6213.8184717611. The cubic root of 38611540 is about 337.9914449943.

The spelling of 38611540 in words is "thirty-eight million, six hundred eleven thousand, five hundred forty".