38806740 has 144 divisors (see below), whose sum is σ = 141697920. Its totient is φ = 8398080.

The previous prime is 38806739. The next prime is 38806741. The reversal of 38806740 is 4760883.

It is an interprime number because it is at equal distance from previous prime (38806739) and next prime (38806741).

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 = 38806695 and 38806704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38806741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23130 + ... + 24750.

Almost surely, 2^38806740 is an apocalyptic number.

38806740 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 38806740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70848960).

38806740 is an abundant number, since it is smaller than the sum of its proper divisors (102891180).

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

38806740 is a wasteful number, since it uses less digits than its factorization.

38806740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 38806740 is about 6229.5055983601. The cubic root of 38806740 is about 338.5600579116.

The spelling of 38806740 in words is "thirty-eight million, eight hundred six thousand, seven hundred forty".