72894370 has 8 divisors (see below), whose sum is σ = 131209884. Its totient is φ = 29157744.

The previous prime is 72894359. The next prime is 72894373. The reversal of 72894370 is 7349827.

It can be written as a sum of positive squares in 2 ways, for example, as 60637369 + 12257001 = 7787^2 + 3501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72894373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3644709 + ... + 3644728.

Almost surely, 2^72894370 is an apocalyptic number.

72894370 is a deficient number, since it is larger than the sum of its proper divisors (58315514).

72894370 is a wasteful number, since it uses less digits than its factorization.

72894370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289444.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 72894370 is about 8537.8199793624. The cubic root of 72894370 is about 417.7322407791.

The spelling of 72894370 in words is "seventy-two million, eight hundred ninety-four thousand, three hundred seventy".