73478155 has 8 divisors (see below), whose sum is σ = 90050112. Its totient is φ = 57531648.

The previous prime is 73478147. The next prime is 73478159. The reversal of 73478155 is 55187437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73478155 - 2³ = 73478147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73478159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156102 + ... + 156571.

It is an arithmetic number, because the mean of its divisors is an integer number (11256264).

Almost surely, 2^73478155 is an apocalyptic number.

73478155 is a deficient number, since it is larger than the sum of its proper divisors (16571957).

73478155 is a wasteful number, since it uses less digits than its factorization.

73478155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312725.

The product of its digits is 117600, while the sum is 40.

The square root of 73478155 is about 8571.9399787913. The cubic root of 73478155 is about 418.8444331468.

The spelling of 73478155 in words is "seventy-three million, four hundred seventy-eight thousand, one hundred fifty-five".