72812830 has 8 divisors (see below), whose sum is σ = 131063112. Its totient is φ = 29125128.

The previous prime is 72812827. The next prime is 72812837. The reversal of 72812830 is 3821827.

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

It is a junction number, because it is equal to n+sod(n) for n = 72812792 and 72812801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72812837) 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, 3640632 + ... + 3640651.

It is an arithmetic number, because the mean of its divisors is an integer number (16382889).

Almost surely, 2^72812830 is an apocalyptic number.

72812830 is a deficient number, since it is larger than the sum of its proper divisors (58250282).

72812830 is a wasteful number, since it uses less digits than its factorization.

72812830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7281290.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 72812830 is about 8533.0434195544. The cubic root of 72812830 is about 417.5764235539.

The spelling of 72812830 in words is "seventy-two million, eight hundred twelve thousand, eight hundred thirty".