38281830 has 32 divisors (see below), whose sum is σ = 92047104. Its totient is φ = 10189536.

The previous prime is 38281811. The next prime is 38281843. The reversal of 38281830 is 3818283.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38281791 and 38281800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24039 + ... + 25581.

It is an arithmetic number, because the mean of its divisors is an integer number (2876472).

Almost surely, 2^38281830 is an apocalyptic number.

38281830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38281830 is an abundant number, since it is smaller than the sum of its proper divisors (53765274).

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

38281830 is a wasteful number, since it uses less digits than its factorization.

38281830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 38281830 is about 6187.2312062828. The cubic root of 38281830 is about 337.0266395540.

The spelling of 38281830 in words is "thirty-eight million, two hundred eighty-one thousand, eight hundred thirty".