3551644428 has 12 divisors (see below), whose sum is σ = 8287170360. Its totient is φ = 1183881472.

The previous prime is 3551644381. The next prime is 3551644457. The reversal of 3551644428 is 8244461553.

3551644428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×3551644428² = 25228356285886894368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3551644428.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147985173 + ... + 147985196.

It is an arithmetic number, because the mean of its divisors is an integer number (690597530).

Almost surely, 2^3551644428 is an apocalyptic number.

It is an amenable number.

3551644428 is an abundant number, since it is smaller than the sum of its proper divisors (4735525932).

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

3551644428 is a wasteful number, since it uses less digits than its factorization.

3551644428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295970376 (or 295970374 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The square root of 3551644428 is about 59595.6745745864. The cubic root of 3551644428 is about 1525.7258109828.

The spelling of 3551644428 in words is "three billion, five hundred fifty-one million, six hundred forty-four thousand, four hundred twenty-eight".