38369640 has 32 divisors (see below), whose sum is σ = 115109280. Its totient is φ = 10231872.

The previous prime is 38369633. The next prime is 38369641. The reversal of 38369640 is 4696383.

It is not an unprimeable number, because it can be changed into a prime (38369641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159754 + ... + 159993.

It is an arithmetic number, because the mean of its divisors is an integer number (3597165).

Almost surely, 2^38369640 is an apocalyptic number.

38369640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38369640 is an abundant number, since it is smaller than the sum of its proper divisors (76739640).

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

38369640 is a wasteful number, since it uses less digits than its factorization.

38369640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319761 (or 319757 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 38369640 is about 6194.3232075829. The cubic root of 38369640 is about 337.2841308183.

The spelling of 38369640 in words is "thirty-eight million, three hundred sixty-nine thousand, six hundred forty".