38668740 has 96 divisors (see below), whose sum is σ = 121080960. Its totient is φ = 9139200.

The previous prime is 38668723. The next prime is 38668753. The reversal of 38668740 is 4786683.

It is a junction number, because it is equal to n+sod(n) for n = 38668692 and 38668701.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26346 + ... + 27774.

It is an arithmetic number, because the mean of its divisors is an integer number (1261260).

Almost surely, 2^38668740 is an apocalyptic number.

38668740 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 38668740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60540480).

38668740 is an abundant number, since it is smaller than the sum of its proper divisors (82412220).

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

38668740 is a wasteful number, since it uses less digits than its factorization.

38668740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 38668740 is about 6218.4194133236. The cubic root of 38668740 is about 338.1582653427.

The spelling of 38668740 in words is "thirty-eight million, six hundred sixty-eight thousand, seven hundred forty".