38388550 has 48 divisors (see below), whose sum is σ = 79615440. Its totient is φ = 13685760.

The previous prime is 38388491. The next prime is 38388557. The reversal of 38388550 is 5588383.

It is a super-2 number, since 2×38388550² = 2947361542205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38388557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14962 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (1658655).

Almost surely, 2^38388550 is an apocalyptic number.

38388550 is an abundant number, since it is smaller than the sum of its proper divisors (41226890).

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

38388550 is a wasteful number, since it uses less digits than its factorization.

38388550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 38388550 is about 6195.8494171502. The cubic root of 38388550 is about 337.3395304817.

The spelling of 38388550 in words is "thirty-eight million, three hundred eighty-eight thousand, five hundred fifty".