38143830 has 32 divisors (see below), whose sum is σ = 96364800. Its totient is φ = 9636192.

The previous prime is 38143823. The next prime is 38143841. The reversal of 38143830 is 3834183.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 32890 + ... + 34029.

It is an arithmetic number, because the mean of its divisors is an integer number (3011400).

Almost surely, 2^38143830 is an apocalyptic number.

38143830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38143830 is an abundant number, since it is smaller than the sum of its proper divisors (58220970).

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

38143830 is a wasteful number, since it uses less digits than its factorization.

38143830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66948.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 38143830 is about 6176.0691382140. The cubic root of 38143830 is about 336.6211758727.

The spelling of 38143830 in words is "thirty-eight million, one hundred forty-three thousand, eight hundred thirty".