38228340 has 24 divisors (see below), whose sum is σ = 107039520. Its totient is φ = 10194208.

The previous prime is 38228299. The next prime is 38228341. The reversal of 38228340 is 4382283.

It is a super-2 number, since 2×38228340² = 2922811958311200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 38228298 and 38228307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38228341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318510 + ... + 318629.

It is an arithmetic number, because the mean of its divisors is an integer number (4459980).

Almost surely, 2^38228340 is an apocalyptic number.

38228340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38228340 is an abundant number, since it is smaller than the sum of its proper divisors (68811180).

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

38228340 is a wasteful number, since it uses less digits than its factorization.

38228340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637151 (or 637149 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 38228340 is about 6182.9070832417. The cubic root of 38228340 is about 336.8695941365.

The spelling of 38228340 in words is "thirty-eight million, two hundred twenty-eight thousand, three hundred forty".