73778346 has 12 divisors (see below), whose sum is σ = 159853122. Its totient is φ = 24592776.

The previous prime is 73778321. The next prime is 73778347. The reversal of 73778346 is 64387737.

It can be written as a sum of positive squares in only one way, i.e., 66243321 + 7535025 = 8139^2 + 2745^2 .

It is not an unprimeable number, because it can be changed into a prime (73778347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2049381 + ... + 2049416.

Almost surely, 2^73778346 is an apocalyptic number.

73778346 is an abundant number, since it is smaller than the sum of its proper divisors (86074776).

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

73778346 is a wasteful number, since it uses less digits than its factorization.

73778346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098805 (or 4098802 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The square root of 73778346 is about 8589.4322280346. The cubic root of 73778346 is about 419.4140468469.

The spelling of 73778346 in words is "seventy-three million, seven hundred seventy-eight thousand, three hundred forty-six".