38447070 has 64 divisors (see below), whose sum is σ = 99809280. Its totient is φ = 9445248.

The previous prime is 38447063. The next prime is 38447093. The reversal of 38447070 is 7074483.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20179 + ... + 22001.

It is an arithmetic number, because the mean of its divisors is an integer number (1559520).

Almost surely, 2^38447070 is an apocalyptic number.

38447070 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 38447070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49904640).

38447070 is an abundant number, since it is smaller than the sum of its proper divisors (61362210).

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

38447070 is a wasteful number, since it uses less digits than its factorization.

38447070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 38447070 is about 6200.5701350763. The cubic root of 38447070 is about 337.5108583612.

The spelling of 38447070 in words is "thirty-eight million, four hundred forty-seven thousand, seventy".