72028370 has 16 divisors (see below), whose sum is σ = 131428440. Its totient is φ = 28416384.

The previous prime is 72028367. The next prime is 72028379. The reversal of 72028370 is 7382027.

72028370 = 461² + 462² + ... + 679².

It can be written as a sum of positive squares in 4 ways, for example, as 38700841 + 33327529 = 6221^2 + 5773^2 .

It is not an unprimeable number, because it can be changed into a prime (72028379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48605 + ... + 50064.

Almost surely, 2^72028370 is an apocalyptic number.

72028370 is a deficient number, since it is larger than the sum of its proper divisors (59400070).

72028370 is a wasteful number, since it uses less digits than its factorization.

72028370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98749.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 72028370 is about 8486.9529278770. The cubic root of 72028370 is about 416.0713981557.

The spelling of 72028370 in words is "seventy-two million, twenty-eight thousand, three hundred seventy".