39116820 has 48 divisors (see below), whose sum is σ = 115295040. Its totient is φ = 9881856.

The previous prime is 39116797. The next prime is 39116827. The reversal of 39116820 is 2861193.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39116827) 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, 16017 + ... + 18296.

It is an arithmetic number, because the mean of its divisors is an integer number (2401980).

Almost surely, 2^39116820 is an apocalyptic number.

39116820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39116820 is an abundant number, since it is smaller than the sum of its proper divisors (76178220).

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

39116820 is a wasteful number, since it uses less digits than its factorization.

39116820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34344 (or 34342 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 39116820 is about 6254.3440903104. The cubic root of 39116820 is about 339.4594062039.

It can be divided in two parts, 3911 and 6820, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 39116820 in words is "thirty-nine million, one hundred sixteen thousand, eight hundred twenty".