1253435376 has 20 divisors (see below), whose sum is σ = 3238041512. Its totient is φ = 417811776.

The previous prime is 1253435371. The next prime is 1253435389. The reversal of 1253435376 is 6735343521.

It is a super-2 number, since 2×1253435376² = 3142200483616522752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253435371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13056571 + ... + 13056666.

Almost surely, 2^1253435376 is an apocalyptic number.

1253435376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1253435376 is an abundant number, since it is smaller than the sum of its proper divisors (1984606136).

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

1253435376 is a wasteful number, since it uses less digits than its factorization.

1253435376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26113248 (or 26113242 counting only the distinct ones).

The product of its digits is 226800, while the sum is 39.

The square root of 1253435376 is about 35403.8892778745. The cubic root of 1253435376 is about 1078.2032814472.

Adding to 1253435376 its reverse (6735343521), we get a palindrome (7988778897).

The spelling of 1253435376 in words is "one billion, two hundred fifty-three million, four hundred thirty-five thousand, three hundred seventy-six".