38418660 has 72 divisors (see below), whose sum is σ = 133189056. Its totient is φ = 8781120.

The previous prime is 38418613. The next prime is 38418697. The reversal of 38418660 is 6681483.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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, 13986 + ... + 16505.

It is an arithmetic number, because the mean of its divisors is an integer number (1849848).

Almost surely, 2^38418660 is an apocalyptic number.

38418660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38418660 is an abundant number, since it is smaller than the sum of its proper divisors (94770396).

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

38418660 is a wasteful number, since it uses less digits than its factorization.

38418660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30513 (or 30508 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 38418660 is about 6198.2787933426. The cubic root of 38418660 is about 337.4277046795.

It can be divided in two parts, 384 and 18660, that added together give a square (19044 = 138²).

The spelling of 38418660 in words is "thirty-eight million, four hundred eighteen thousand, six hundred sixty".