1355640224 has 24 divisors (see below), whose sum is σ = 2673643140. Its totient is φ = 676619776.

The previous prime is 1355640191. The next prime is 1355640229. The reversal of 1355640224 is 4220465531.

It can be written as a sum of positive squares in 2 ways, for example, as 1206311824 + 149328400 = 34732^2 + 12220^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1355640229) 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, 19019 + ... + 55434.

Almost surely, 2^1355640224 is an apocalyptic number.

It is an amenable number.

1355640224 is a deficient number, since it is larger than the sum of its proper divisors (1318002916).

1355640224 is an equidigital number, since it uses as much as digits as its factorization.

1355640224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75032 (or 75024 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1355640224 is about 36819.0198674544. The cubic root of 1355640224 is about 1106.7464786554.

The spelling of 1355640224 in words is "one billion, three hundred fifty-five million, six hundred forty thousand, two hundred twenty-four".