38707740 has 96 divisors (see below), whose sum is σ = 123298560. Its totient is φ = 10075968.

The previous prime is 38707729. The next prime is 38707741. The reversal of 38707740 is 4770783.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 38707695 and 38707704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38707741) 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 31 ways as a sum of consecutive naturals, for example, 22387 + ... + 24053.

It is an arithmetic number, because the mean of its divisors is an integer number (1284360).

Almost surely, 2^38707740 is an apocalyptic number.

38707740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38707740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61649280).

38707740 is an abundant number, since it is smaller than the sum of its proper divisors (84590820).

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

38707740 is a wasteful number, since it uses less digits than its factorization.

38707740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 38707740 is about 6221.5544681374. The cubic root of 38707740 is about 338.2719121896.

The spelling of 38707740 in words is "thirty-eight million, seven hundred seven thousand, seven hundred forty".