38228736 has 144 divisors (see below), whose sum is σ = 125452544. Its totient is φ = 10063872.

The previous prime is 38228731. The next prime is 38228747. The reversal of 38228736 is 63782283.

It is a happy number.

It is a super-2 number, since 2×38228736² = 2922872512315392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 38228694 and 38228703.

It is not an unprimeable number, because it can be changed into a prime (38228731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69615 + ... + 70161.

Almost surely, 2^38228736 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 38228736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62726272).

38228736 is an abundant number, since it is smaller than the sum of its proper divisors (87223808).

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

38228736 is a wasteful number, since it uses less digits than its factorization.

38228736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 572 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 38228736 is about 6182.9391069296. The cubic root of 38228736 is about 336.8707573215.

It can be divided in two parts, 38 and 228736, that multiplied together give a palindrome (8691968).

The spelling of 38228736 in words is "thirty-eight million, two hundred twenty-eight thousand, seven hundred thirty-six".