72803378 has 8 divisors (see below), whose sum is σ = 110995500. Its totient is φ = 35804880.

The previous prime is 72803377. The next prime is 72803431. The reversal of 72803378 is 87330827.

It can be written as a sum of positive squares in 2 ways, for example, as 66961489 + 5841889 = 8183^2 + 2417^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72803371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298253 + ... + 298496.

Almost surely, 2^72803378 is an apocalyptic number.

72803378 is a deficient number, since it is larger than the sum of its proper divisors (38192122).

72803378 is a wasteful number, since it uses less digits than its factorization.

72803378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596812.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 72803378 is about 8532.4895546376. The cubic root of 72803378 is about 417.5583539217.

The spelling of 72803378 in words is "seventy-two million, eight hundred three thousand, three hundred seventy-eight".