3221152428 has 24 divisors (see below), whose sum is σ = 8094178288. Its totient is φ = 991123776.

The previous prime is 3221152427. The next prime is 3221152453. The reversal of 3221152428 is 8242511223.

It is a junction number, because it is equal to n+sod(n) for n = 3221152395 and 3221152404.

It is not an unprimeable number, because it can be changed into a prime (3221152421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10324051 + ... + 10324362.

Almost surely, 2^3221152428 is an apocalyptic number.

It is an amenable number.

3221152428 is an abundant number, since it is smaller than the sum of its proper divisors (4873025860).

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

3221152428 is a wasteful number, since it uses less digits than its factorization.

3221152428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20648433 (or 20648431 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 3221152428 is about 56755.1973655277. The cubic root of 3221152428 is about 1476.8523968688.

The spelling of 3221152428 in words is "three billion, two hundred twenty-one million, one hundred fifty-two thousand, four hundred twenty-eight".