73361778 has 32 divisors (see below), whose sum is σ = 168376320. Its totient is φ = 20874000.

The previous prime is 73361777. The next prime is 73361819. The reversal of 73361778 is 87716337.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (73361773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7063 + ... + 14021.

It is an arithmetic number, because the mean of its divisors is an integer number (5261760).

Almost surely, 2^73361778 is an apocalyptic number.

73361778 is an abundant number, since it is smaller than the sum of its proper divisors (95014542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73361778 is a wasteful number, since it uses less digits than its factorization.

73361778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222.

The product of its digits is 148176, while the sum is 42.

The square root of 73361778 is about 8565.1490354809. The cubic root of 73361778 is about 418.6231899974.

The spelling of 73361778 in words is "seventy-three million, three hundred sixty-one thousand, seven hundred seventy-eight".