39428396 has 36 divisors (see below), whose sum is σ = 80840592. Its totient is φ = 16477344.

The previous prime is 39428393. The next prime is 39428399. The reversal of 39428396 is 69382493.

It is an interprime number because it is at equal distance from previous prime (39428393) and next prime (39428399).

It is a super-2 number, since 2×39428396² = 3109196822265632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241811 + ... + 241973.

It is an arithmetic number, because the mean of its divisors is an integer number (2245572).

Almost surely, 2^39428396 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 39428396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40420296).

39428396 is an abundant number, since it is smaller than the sum of its proper divisors (41412196).

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

39428396 is a wasteful number, since it uses less digits than its factorization.

39428396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 225 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 39428396 is about 6279.2034526682. The cubic root of 39428396 is about 340.3583188977.

The spelling of 39428396 in words is "thirty-nine million, four hundred twenty-eight thousand, three hundred ninety-six".