1345572240 has 80 divisors (see below), whose sum is σ = 4224134400. Its totient is φ = 354272256.

The previous prime is 1345572233. The next prime is 1345572251. The reversal of 1345572240 is 422755431.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16525 + ... + 54444.

It is an arithmetic number, because the mean of its divisors is an integer number (52801680).

Almost surely, 2^1345572240 is an apocalyptic number.

1345572240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345572240 is an abundant number, since it is smaller than the sum of its proper divisors (2878562160).

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

1345572240 is a wasteful number, since it uses less digits than its factorization.

1345572240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71064 (or 71058 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 1345572240 is about 36682.0424731230. The cubic root of 1345572240 is about 1103.9998293425. Note that the first 3 decimals are identical.

The spelling of 1345572240 in words is "one billion, three hundred forty-five million, five hundred seventy-two thousand, two hundred forty".