1356020440 has 16 divisors (see below), whose sum is σ = 3051046080. Its totient is φ = 542408160.

The previous prime is 1356020417. The next prime is 1356020447. The reversal of 1356020440 is 440206531.

It is a super-3 number, since 3×1356020440³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356020447) 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, 16950216 + ... + 16950295.

It is an arithmetic number, because the mean of its divisors is an integer number (190690380).

Almost surely, 2^1356020440 is an apocalyptic number.

1356020440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356020440 is an abundant number, since it is smaller than the sum of its proper divisors (1695025640).

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

1356020440 is a wasteful number, since it uses less digits than its factorization.

1356020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33900522 (or 33900518 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1356020440 is about 36824.1828151013. The cubic root of 1356020440 is about 1106.8499385993.

Adding to 1356020440 its reverse (440206531), we get a palindrome (1796226971).

The spelling of 1356020440 in words is "one billion, three hundred fifty-six million, twenty thousand, four hundred forty".