1720001372 has 24 divisors (see below), whose sum is σ = 3169966800. Its totient is φ = 814340736.

The previous prime is 1720001329. The next prime is 1720001407. The reversal of 1720001372 is 2731000271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203258 + ... + 211550.

It is an arithmetic number, because the mean of its divisors is an integer number (132081950).

Almost surely, 2^1720001372 is an apocalyptic number.

It is an amenable number.

1720001372 is a deficient number, since it is larger than the sum of its proper divisors (1449965428).

1720001372 is a wasteful number, since it uses less digits than its factorization.

1720001372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045 (or 11043 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 1720001372 is about 41472.8992475809. The cubic root of 1720001372 is about 1198.1456015555.

The spelling of 1720001372 in words is "one billion, seven hundred twenty million, one thousand, three hundred seventy-two".