39430020 has 96 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 8953344.

The previous prime is 39430003. The next prime is 39430037. The reversal of 39430020 is 2003493.

It is an interprime number because it is at equal distance from previous prime (39430003) and next prime (39430037).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112806 + ... + 113154.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^39430020 is an apocalyptic number.

39430020 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 39430020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63504000).

39430020 is an abundant number, since it is smaller than the sum of its proper divisors (87577980).

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

39430020 is a wasteful number, since it uses less digits than its factorization.

39430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 39430020 is about 6279.3327671019. The cubic root of 39430020 is about 340.3629917932.

The spelling of 39430020 in words is "thirty-nine million, four hundred thirty thousand, twenty".