38420712 has 96 divisors (see below), whose sum is σ = 114660000. Its totient is φ = 11525760.

The previous prime is 38420671. The next prime is 38420719. The reversal of 38420712 is 21702483.

It is a super-2 number, since 2×38420712² = 2952302221173888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38420719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109914 + ... + 110262.

It is an arithmetic number, because the mean of its divisors is an integer number (1194375).

Almost surely, 2^38420712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38420712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57330000).

38420712 is an abundant number, since it is smaller than the sum of its proper divisors (76239288).

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

38420712 is a wasteful number, since it uses less digits than its factorization.

38420712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 38420712 is about 6198.4443209567. Note that the first 3 decimals coincide. The cubic root of 38420712 is about 337.4337120842.

The spelling of 38420712 in words is "thirty-eight million, four hundred twenty thousand, seven hundred twelve".