38145450 has 96 divisors (see below), whose sum is σ = 114528384. Its totient is φ = 8202240.

The previous prime is 38145449. The next prime is 38145461. The reversal of 38145450 is 5454183.

38145450 = 10² + 11² + ... + 485².

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 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 47 ways as a sum of consecutive naturals, for example, 16782 + ... + 18918.

It is an arithmetic number, because the mean of its divisors is an integer number (1193004).

Almost surely, 2^38145450 is an apocalyptic number.

38145450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38145450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57264192).

38145450 is an abundant number, since it is smaller than the sum of its proper divisors (76382934).

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

38145450 is a wasteful number, since it uses less digits than its factorization.

38145450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 38145450 is about 6176.2002882031. The cubic root of 38145450 is about 336.6259413318.

The spelling of 38145450 in words is "thirty-eight million, one hundred forty-five thousand, four hundred fifty".