72540154 has 16 divisors (see below), whose sum is σ = 110305800. Its totient is φ = 35774784.

The previous prime is 72540121. The next prime is 72540161. The reversal of 72540154 is 45104527.

It can be written as a sum of positive squares in 4 ways, for example, as 60450625 + 12089529 = 7775^2 + 3477^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 58024 + ... + 59260.

Almost surely, 2^72540154 is an apocalyptic number.

72540154 is a deficient number, since it is larger than the sum of its proper divisors (37765646).

72540154 is a wasteful number, since it uses less digits than its factorization.

72540154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 72540154 is about 8517.0507806400. The cubic root of 72540154 is about 417.0545123275.

The spelling of 72540154 in words is "seventy-two million, five hundred forty thousand, one hundred fifty-four".