39428565488 has 80 divisors (see below), whose sum is σ = 86004495360. Its totient is φ = 17374486272.

The previous prime is 39428565487. The next prime is 39428565587. The reversal of 39428565488 is 88456582493.

It is a happy number.

It is a super-2 number, since 2×39428565488² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39428565488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39428565487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2686073 + ... + 2700711.

It is an arithmetic number, because the mean of its divisors is an integer number (1075056192).

Almost surely, 2^39428565488 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 39428565488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43002247680).

39428565488 is an abundant number, since it is smaller than the sum of its proper divisors (46575929872).

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

39428565488 is a wasteful number, since it uses less digits than its factorization.

39428565488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15246 (or 15240 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 62.

The spelling of 39428565488 in words is "thirty-nine billion, four hundred twenty-eight million, five hundred sixty-five thousand, four hundred eighty-eight".