2739999020 has 72 divisors (see below), whose sum is σ = 6340110000. Its totient is φ = 993928320.

The previous prime is 2739999019. The next prime is 2739999029. The reversal of 2739999020 is 209999372.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2739999020.

It is not an unprimeable number, because it can be changed into a prime (2739999029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1206446 + ... + 1208714.

Almost surely, 2^2739999020 is an apocalyptic number.

2739999020 is a gapful number since it is divisible by the number (20) 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 2739999020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3170055000).

2739999020 is an abundant number, since it is smaller than the sum of its proper divisors (3600110980).

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

2739999020 is a wasteful number, since it uses less digits than its factorization.

2739999020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 2739999020 is about 52344.9999522399. Note that the first 4 decimals coincide. The cubic root of 2739999020 is about 1399.3192302442.

The spelling of 2739999020 in words is "two billion, seven hundred thirty-nine million, nine hundred ninety-nine thousand, twenty".