38278020 has 96 divisors (see below), whose sum is σ = 119024640. Its totient is φ = 9112960.

The previous prime is 38278007. The next prime is 38278021. The reversal of 38278020 is 2087283.

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

It is not an unprimeable number, because it can be changed into a prime (38278021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38449 + ... + 39431.

It is an arithmetic number, because the mean of its divisors is an integer number (1239840).

Almost surely, 2^38278020 is an apocalyptic number.

38278020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38278020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59512320).

38278020 is an abundant number, since it is smaller than the sum of its proper divisors (80746620).

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

38278020 is a wasteful number, since it uses less digits than its factorization.

38278020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 38278020 is about 6186.9233064586. The cubic root of 38278020 is about 337.0154583217.

The spelling of 38278020 in words is "thirty-eight million, two hundred seventy-eight thousand, twenty".