3428721120 has 96 divisors (see below), whose sum is σ = 11782350720. Its totient is φ = 831203840.

The previous prime is 3428721091. The next prime is 3428721139. The reversal of 3428721120 is 211278243.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×3428721120² = 23512257037468108800, which contains 22 as substring.

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, 319410 + ... + 329969.

It is an arithmetic number, because the mean of its divisors is an integer number (122732820).

Almost surely, 2^3428721120 is an apocalyptic number.

3428721120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3428721120 is an abundant number, since it is smaller than the sum of its proper divisors (8353629600).

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

3428721120 is a wasteful number, since it uses less digits than its factorization.

3428721120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649408 (or 649400 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 3428721120 is about 58555.2825968759. The cubic root of 3428721120 is about 1507.9168268358.

Adding to 3428721120 its reverse (211278243), we get a palindrome (3639999363).

The spelling of 3428721120 in words is "three billion, four hundred twenty-eight million, seven hundred twenty-one thousand, one hundred twenty".