39253728 has 48 divisors (see below), whose sum is σ = 105564816. Its totient is φ = 12764160.

The previous prime is 39253727. The next prime is 39253763. The reversal of 39253728 is 82735293.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39253727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051 + ... + 8922.

It is an arithmetic number, because the mean of its divisors is an integer number (2199267).

Almost surely, 2^39253728 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 39253728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52782408).

39253728 is an abundant number, since it is smaller than the sum of its proper divisors (66311088).

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

39253728 is a wasteful number, since it uses less digits than its factorization.

39253728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10027 (or 10019 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 39253728 is about 6265.2795627969. The cubic root of 39253728 is about 339.8549785213.

The spelling of 39253728 in words is "thirty-nine million, two hundred fifty-three thousand, seven hundred twenty-eight".