72954278 has 4 divisors (see below), whose sum is σ = 109431420. Its totient is φ = 36477138.

The previous prime is 72954263. The next prime is 72954307. The reversal of 72954278 is 87245927.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18238568 + ... + 18238571.

It is an arithmetic number, because the mean of its divisors is an integer number (27357855).

Almost surely, 2^72954278 is an apocalyptic number.

72954278 is a deficient number, since it is larger than the sum of its proper divisors (36477142).

72954278 is a wasteful number, since it uses less digits than its factorization.

72954278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36477141.

The product of its digits is 282240, while the sum is 44.

The square root of 72954278 is about 8541.3276485568. The cubic root of 72954278 is about 417.8466467362.

The spelling of 72954278 in words is "seventy-two million, nine hundred fifty-four thousand, two hundred seventy-eight".