38433780 has 288 divisors, whose sum is σ = 150958080. Its totient is φ = 7683840.

The previous prime is 38433763. The next prime is 38433781. The reversal of 38433780 is 8733483.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38433781) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 651391 + ... + 651449.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^38433780 is an apocalyptic number.

38433780 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 38433780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

38433780 is an abundant number, since it is smaller than the sum of its proper divisors (112524300).

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

38433780 is a wasteful number, since it uses less digits than its factorization.

38433780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 38433780 is about 6199.4983668036. The cubic root of 38433780 is about 337.4719647494.

The spelling of 38433780 in words is "thirty-eight million, four hundred thirty-three thousand, seven hundred eighty".