72403030 has 64 divisors (see below), whose sum is σ = 155105280. Its totient is φ = 23819904.

The previous prime is 72403027. The next prime is 72403039. The reversal of 72403030 is 3030427.

It is a junction number, because it is equal to n+sod(n) for n = 72402989 and 72403007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72403039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193924 + ... + 194296.

It is an arithmetic number, because the mean of its divisors is an integer number (2423520).

Almost surely, 2^72403030 is an apocalyptic number.

72403030 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72403030 is an abundant number, since it is smaller than the sum of its proper divisors (82702250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72403030 is a wasteful number, since it uses less digits than its factorization.

72403030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 72403030 is about 8508.9970031726. The cubic root of 72403030 is about 416.7915579392.

Adding to 72403030 its reverse (3030427), we get a palindrome (75433457).

The spelling of 72403030 in words is "seventy-two million, four hundred three thousand, thirty".