38383440 has 40 divisors (see below), whose sum is σ = 118989408. Its totient is φ = 10235520.

The previous prime is 38383417. The next prime is 38383451. The reversal of 38383440 is 4438383.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79726 + ... + 80205.

Almost surely, 2^38383440 is an apocalyptic number.

38383440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38383440 is an abundant number, since it is smaller than the sum of its proper divisors (80605968).

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

38383440 is a wasteful number, since it uses less digits than its factorization.

38383440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159947 (or 159941 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 38383440 is about 6195.4370305895. The cubic root of 38383440 is about 337.3245617693.

The spelling of 38383440 in words is "thirty-eight million, three hundred eighty-three thousand, four hundred forty".