72870078 has 8 divisors (see below), whose sum is σ = 145740168. Its totient is φ = 24290024.

The previous prime is 72870047. The next prime is 72870101. The reversal of 72870078 is 87007827.

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

72870078 is an admirable number.

It is a Curzon number.

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, 6072501 + ... + 6072512.

It is an arithmetic number, because the mean of its divisors is an integer number (18217521).

Almost surely, 2^72870078 is an apocalyptic number.

72870078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72870078 is a wasteful number, since it uses less digits than its factorization.

72870078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12145018.

The product of its (nonzero) digits is 43904, while the sum is 39.

The square root of 72870078 is about 8536.3972494255. The cubic root of 72870078 is about 417.6858326270.

The spelling of 72870078 in words is "seventy-two million, eight hundred seventy thousand, seventy-eight".