72078830 has 8 divisors (see below), whose sum is σ = 129741912. Its totient is φ = 28831528.

The previous prime is 72078829. The next prime is 72078859. The reversal of 72078830 is 3887027.

72078830 = T₅₃₆₇ + T₅₃₆₈ + ... + T₅₃₇₁.

It is a happy number.

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

It is a congruent number.

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, 3603932 + ... + 3603951.

It is an arithmetic number, because the mean of its divisors is an integer number (16217739).

Almost surely, 2^72078830 is an apocalyptic number.

72078830 is a deficient number, since it is larger than the sum of its proper divisors (57663082).

72078830 is a wasteful number, since it uses less digits than its factorization.

72078830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207890.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 72078830 is about 8489.9252057954. The cubic root of 72078830 is about 416.1685360933.

The spelling of 72078830 in words is "seventy-two million, seventy-eight thousand, eight hundred thirty".