72603802 has 4 divisors (see below), whose sum is σ = 108905706. Its totient is φ = 36301900.

The previous prime is 72603779. The next prime is 72603803. The reversal of 72603802 is 20830627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20830627 = 17 ⋅1225331.

It can be written as a sum of positive squares in only one way, i.e., 59923081 + 12680721 = 7741^2 + 3561^2 .

It is not an unprimeable number, because it can be changed into a prime (72603803) by changing a digit.

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 as a sum of consecutive naturals, namely, 18150949 + ... + 18150952.

Almost surely, 2^72603802 is an apocalyptic number.

72603802 is a deficient number, since it is larger than the sum of its proper divisors (36301904).

72603802 is a wasteful number, since it uses less digits than its factorization.

72603802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36301903.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 72603802 is about 8520.7864660488. The cubic root of 72603802 is about 417.1764536448.

The spelling of 72603802 in words is "seventy-two million, six hundred three thousand, eight hundred two".