1533402234 has 144 divisors (see below), whose sum is σ = 4156132032. Its totient is φ = 400038912.

The previous prime is 1533402217. The next prime is 1533402257. The reversal of 1533402234 is 4322043351.

It is a super-2 number, since 2×1533402234² = 4702644822472381512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1533402198 and 1533402207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2278122 + ... + 2278794.

It is an arithmetic number, because the mean of its divisors is an integer number (28862028).

Almost surely, 2^1533402234 is an apocalyptic number.

1533402234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1533402234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078066016).

1533402234 is an abundant number, since it is smaller than the sum of its proper divisors (2622729798).

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

1533402234 is a wasteful number, since it uses less digits than its factorization.

1533402234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1533402234 is about 39158.6801871565. The cubic root of 1533402234 is about 1153.1488331470.

Adding to 1533402234 its reverse (4322043351), we get a palindrome (5855445585).

The spelling of 1533402234 in words is "one billion, five hundred thirty-three million, four hundred two thousand, two hundred thirty-four".