38549920 has 48 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 15357184.

The previous prime is 38549899. The next prime is 38549941. The reversal of 38549920 is 2994583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38549899) and next prime (38549941).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 76389 + ... + 76891.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^38549920 is an apocalyptic number.

It is an amenable number.

38549920 is an abundant number, since it is smaller than the sum of its proper divisors (52895840).

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

38549920 is a wasteful number, since it uses less digits than its factorization.

38549920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 38549920 is about 6208.8581881051. The cubic root of 38549920 is about 337.8115495370.

It can be divided in two parts, 385 and 49920, that added together give a palindrome (50305).

The spelling of 38549920 in words is "thirty-eight million, five hundred forty-nine thousand, nine hundred twenty".