72903394 has 8 divisors (see below), whose sum is σ = 112310748. Its totient is φ = 35466480.

The previous prime is 72903379. The next prime is 72903403. The reversal of 72903394 is 49330927.

It can be written as a sum of positive squares in 2 ways, for example, as 72029169 + 874225 = 8487^2 + 935^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492517 + ... + 492664.

Almost surely, 2^72903394 is an apocalyptic number.

72903394 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72903394 is a deficient number, since it is larger than the sum of its proper divisors (39407354).

72903394 is a wasteful number, since it uses less digits than its factorization.

72903394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985220.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 72903394 is about 8538.3484351483. The cubic root of 72903394 is about 417.7494778680.

The spelling of 72903394 in words is "seventy-two million, nine hundred three thousand, three hundred ninety-four".