39628620 has 72 divisors (see below), whose sum is σ = 121159584. Its totient is φ = 10483968.

The previous prime is 39628613. The next prime is 39628637. The reversal of 39628620 is 2682693.

39628620 is a `hidden beast` number, since 3 + 9 + 6 + 28 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23857 + ... + 25463.

It is an arithmetic number, because the mean of its divisors is an integer number (1682772).

Almost surely, 2^39628620 is an apocalyptic number.

39628620 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 39628620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60579792).

39628620 is an abundant number, since it is smaller than the sum of its proper divisors (81530964).

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

39628620 is a wasteful number, since it uses less digits than its factorization.

39628620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 39628620 is about 6295.1266865727. The cubic root of 39628620 is about 340.9334785947.

The spelling of 39628620 in words is "thirty-nine million, six hundred twenty-eight thousand, six hundred twenty".