72001437 has 16 divisors (see below), whose sum is σ = 99440640. Its totient is φ = 46292400.

The previous prime is 72001381. The next prime is 72001439. The reversal of 72001437 is 73410027.

It is not a de Polignac number, because 72001437 - 2⁶ = 72001373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72001439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29614 + ... + 31952.

It is an arithmetic number, because the mean of its divisors is an integer number (6215040).

Almost surely, 2^72001437 is an apocalyptic number.

It is an amenable number.

72001437 is a deficient number, since it is larger than the sum of its proper divisors (27439203).

72001437 is a wasteful number, since it uses less digits than its factorization.

72001437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 72001437 is about 8485.3660498531. The cubic root of 72001437 is about 416.0195322591.

The spelling of 72001437 in words is "seventy-two million, one thousand, four hundred thirty-seven".