39820000 has 120 divisors (see below), whose sum is σ = 107459352. Its totient is φ = 14400000.

The previous prime is 39819977. The next prime is 39820037. The reversal of 39820000 is 2893.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219910 + ... + 220090.

Almost surely, 2^39820000 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 39820000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53729676).

39820000 is an abundant number, since it is smaller than the sum of its proper divisors (67639352).

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

39820000 is a wasteful number, since it uses less digits than its factorization.

39820000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 39820000 is about 6310.3090257134. The cubic root of 39820000 is about 341.4814251326.

Adding to 39820000 its reverse (2893), we get a palindrome (39822893).

The spelling of 39820000 in words is "thirty-nine million, eight hundred twenty thousand".