72725030 has 32 divisors (see below), whose sum is σ = 151511040. Its totient is φ = 24616800.

The previous prime is 72724999. The next prime is 72725033. The reversal of 72725030 is 3052727.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72725033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046 + ... + 12105.

It is an arithmetic number, because the mean of its divisors is an integer number (4734720).

Almost surely, 2^72725030 is an apocalyptic number.

72725030 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72725030 is an abundant number, since it is smaller than the sum of its proper divisors (78786010).

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

72725030 is a wasteful number, since it uses less digits than its factorization.

72725030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13244.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 72725030 is about 8527.8971616689. The cubic root of 72725030 is about 417.4085137848.

Adding to 72725030 its reverse (3052727), we get a palindrome (75777757).

The spelling of 72725030 in words is "seventy-two million, seven hundred twenty-five thousand, thirty".