39628437720 has 128 divisors (see below), whose sum is σ = 120991631040. Its totient is φ = 10380810240.

The previous prime is 39628437697. The next prime is 39628437743. The reversal of 39628437720 is 2773482693.

It is an interprime number because it is at equal distance from previous prime (39628437697) and next prime (39628437743).

It is a super-2 number, since 2×39628437720² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6416554 + ... + 6422726.

Almost surely, 2^39628437720 is an apocalyptic number.

39628437720 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 39628437720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60495815520).

39628437720 is an abundant number, since it is smaller than the sum of its proper divisors (81363193320).

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

39628437720 is a wasteful number, since it uses less digits than its factorization.

39628437720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7125 (or 7121 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 39628437720 in words is "thirty-nine billion, six hundred twenty-eight million, four hundred thirty-seven thousand, seven hundred twenty".