72278958 has 32 divisors (see below), whose sum is σ = 148490496. Its totient is φ = 23442048.

The previous prime is 72278957. The next prime is 72278959. The reversal of 72278958 is 85987227.

It is an interprime number because it is at equal distance from previous prime (72278957) and next prime (72278959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72278957) 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, 111391 + ... + 112037.

It is an arithmetic number, because the mean of its divisors is an integer number (4640328).

Almost surely, 2^72278958 is an apocalyptic number.

72278958 is an abundant number, since it is smaller than the sum of its proper divisors (76211538).

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

72278958 is a wasteful number, since it uses less digits than its factorization.

72278958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its digits is 564480, while the sum is 48.

The square root of 72278958 is about 8501.7032411159. The cubic root of 72278958 is about 416.5533463210.

The spelling of 72278958 in words is "seventy-two million, two hundred seventy-eight thousand, nine hundred fifty-eight".