3820139400 has 288 divisors, whose sum is σ = 14878422720. Its totient is φ = 793689600.

The previous prime is 3820139357. The next prime is 3820139413. The reversal of 3820139400 is 49310283.

3820139400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 504442 + ... + 511958.

It is an arithmetic number, because the mean of its divisors is an integer number (51661190).

Almost surely, 2^3820139400 is an apocalyptic number.

3820139400 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 3820139400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7439211360).

3820139400 is an abundant number, since it is smaller than the sum of its proper divisors (11058283320).

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

3820139400 is a wasteful number, since it uses less digits than its factorization.

3820139400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565 (or 7545 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 3820139400 is about 61807.2762706787. The cubic root of 3820139400 is about 1563.2426796839.

Adding to 3820139400 its reverse (49310283), we get a palindrome (3869449683).

The spelling of 3820139400 in words is "three billion, eight hundred twenty million, one hundred thirty-nine thousand, four hundred".