38433681 has 24 divisors (see below), whose sum is σ = 65222976. Its totient is φ = 21500640.

The previous prime is 38433677. The next prime is 38433683. The reversal of 38433681 is 18633483.

It is a happy number.

It is not a de Polignac number, because 38433681 - 2² = 38433677 is a prime.

It is a super-2 number, since 2×38433681² = 2954295670419522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38433683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13645 + ... + 16218.

It is an arithmetic number, because the mean of its divisors is an integer number (2717624).

Almost surely, 2^38433681 is an apocalyptic number.

It is an amenable number.

38433681 is a deficient number, since it is larger than the sum of its proper divisors (26789295).

38433681 is a wasteful number, since it uses less digits than its factorization.

38433681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29893 (or 29890 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 38433681 is about 6199.4903822814. The cubic root of 38433681 is about 337.4716749891.

The spelling of 38433681 in words is "thirty-eight million, four hundred thirty-three thousand, six hundred eighty-one".