72951427 has 4 divisors (see below), whose sum is σ = 72975816. Its totient is φ = 72927040.

The previous prime is 72951421. The next prime is 72951449. The reversal of 72951427 is 72415927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72415927 = 73 ⋅991999.

It is a cyclic number.

It is not a de Polignac number, because 72951427 - 2³ = 72951419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72951421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6958 + ... + 13939.

It is an arithmetic number, because the mean of its divisors is an integer number (18243954).

Almost surely, 2^72951427 is an apocalyptic number.

72951427 is a deficient number, since it is larger than the sum of its proper divisors (24389).

72951427 is a wasteful number, since it uses less digits than its factorization.

72951427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24388.

The product of its digits is 35280, while the sum is 37.

The square root of 72951427 is about 8541.1607524973. The cubic root of 72951427 is about 417.8412036178.

The spelling of 72951427 in words is "seventy-two million, nine hundred fifty-one thousand, four hundred twenty-seven".