72278870 has 8 divisors (see below), whose sum is σ = 130101984. Its totient is φ = 28911544.

The previous prime is 72278861. The next prime is 72278897. The reversal of 72278870 is 7887227.

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

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, 3613934 + ... + 3613953.

It is an arithmetic number, because the mean of its divisors is an integer number (16262748).

Almost surely, 2^72278870 is an apocalyptic number.

72278870 is a deficient number, since it is larger than the sum of its proper divisors (57823114).

72278870 is a wasteful number, since it uses less digits than its factorization.

72278870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227894.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 72278870 is about 8501.6980656808. The cubic root of 72278870 is about 416.5531772690.

The spelling of 72278870 in words is "seventy-two million, two hundred seventy-eight thousand, eight hundred seventy".