3421732440 has 64 divisors (see below), whose sum is σ = 11731656960. Its totient is φ = 782110080.

The previous prime is 3421732421. The next prime is 3421732441. The reversal of 3421732440 is 442371243.

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

It is a junction number, because it is equal to n+sod(n) for n = 3421732398 and 3421732407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421732441) 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, 2035906 + ... + 2037585.

It is an arithmetic number, because the mean of its divisors is an integer number (183307140).

Almost surely, 2^3421732440 is an apocalyptic number.

3421732440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3421732440 is an abundant number, since it is smaller than the sum of its proper divisors (8309924520).

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

3421732440 is a wasteful number, since it uses less digits than its factorization.

3421732440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073512 (or 4073508 counting only the distinct ones).

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

The square root of 3421732440 is about 58495.5762429946. The cubic root of 3421732440 is about 1506.8916130666.

The spelling of 3421732440 in words is "three billion, four hundred twenty-one million, seven hundred thirty-two thousand, four hundred forty".