2720346420 has 48 divisors (see below), whose sum is σ = 8309423808. Its totient is φ = 659477760.

The previous prime is 2720346403. The next prime is 2720346457. The reversal of 2720346420 is 246430272.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2060209 + ... + 2061528.

It is an arithmetic number, because the mean of its divisors is an integer number (173112996).

Almost surely, 2^2720346420 is an apocalyptic number.

2720346420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2720346420 is an abundant number, since it is smaller than the sum of its proper divisors (5589077388).

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

2720346420 is a wasteful number, since it uses less digits than its factorization.

2720346420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121760 (or 4121758 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 2720346420 is about 52156.9402860252. The cubic root of 2720346420 is about 1395.9656678831.

Adding to 2720346420 its reverse (246430272), we get a palindrome (2966776692).

The spelling of 2720346420 in words is "two billion, seven hundred twenty million, three hundred forty-six thousand, four hundred twenty".