38218530 has 48 divisors (see below), whose sum is σ = 106704000. Its totient is φ = 8735328.

The previous prime is 38218517. The next prime is 38218559. The reversal of 38218530 is 3581283.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 11530 + ... + 14469.

It is an arithmetic number, because the mean of its divisors is an integer number (2223000).

Almost surely, 2^38218530 is an apocalyptic number.

38218530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38218530 is an abundant number, since it is smaller than the sum of its proper divisors (68485470).

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

38218530 is a wasteful number, since it uses less digits than its factorization.

38218530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26023 (or 26016 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 38218530 is about 6182.1137161977. The cubic root of 38218530 is about 336.8407763063.

The spelling of 38218530 in words is "thirty-eight million, two hundred eighteen thousand, five hundred thirty".