72087454 has 4 divisors (see below), whose sum is σ = 108131184. Its totient is φ = 36043726.

The previous prime is 72087403. The next prime is 72087461. The reversal of 72087454 is 45478027.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18021862 + ... + 18021865.

It is an arithmetic number, because the mean of its divisors is an integer number (27032796).

Almost surely, 2^72087454 is an apocalyptic number.

72087454 is a deficient number, since it is larger than the sum of its proper divisors (36043730).

72087454 is a wasteful number, since it uses less digits than its factorization.

72087454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36043729.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 72087454 is about 8490.4330867159. The cubic root of 72087454 is about 416.1851331733.

The spelling of 72087454 in words is "seventy-two million, eighty-seven thousand, four hundred fifty-four".