39842220 has 192 divisors, whose sum is σ = 133249536. Its totient is φ = 8785920.

The previous prime is 39842219. The next prime is 39842239. The reversal of 39842220 is 2224893.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 594627 + ... + 594693.

It is an arithmetic number, because the mean of its divisors is an integer number (694008).

Almost surely, 2^39842220 is an apocalyptic number.

39842220 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 39842220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66624768).

39842220 is an abundant number, since it is smaller than the sum of its proper divisors (93407316).

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

39842220 is a wasteful number, since it uses less digits than its factorization.

39842220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 39842220 is about 6312.0693912536. The cubic root of 39842220 is about 341.5449301248.

The spelling of 39842220 in words is "thirty-nine million, eight hundred forty-two thousand, two hundred twenty".