72043370 has 16 divisors (see below), whose sum is σ = 148203648. Its totient is φ = 24700560.

The previous prime is 72043369. The next prime is 72043451. The reversal of 72043370 is 7334027.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 514526 + ... + 514665.

It is an arithmetic number, because the mean of its divisors is an integer number (9262728).

Almost surely, 2^72043370 is an apocalyptic number.

72043370 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72043370 is an abundant number, since it is smaller than the sum of its proper divisors (76160278).

72043370 is a wasteful number, since it uses less digits than its factorization.

72043370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029205.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 72043370 is about 8487.8365912640. The cubic root of 72043370 is about 416.1002786176.

Adding to 72043370 its reverse (7334027), we get a palindrome (79377397).

The spelling of 72043370 in words is "seventy-two million, forty-three thousand, three hundred seventy".