73401890 has 16 divisors (see below), whose sum is σ = 135346680. Its totient is φ = 28644480.

The previous prime is 73401857. The next prime is 73401907. The reversal of 73401890 is 9810437.

It can be written as a sum of positive squares in 4 ways, for example, as 63473089 + 9928801 = 7967^2 + 3151^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89105 + ... + 89924.

Almost surely, 2^73401890 is an apocalyptic number.

73401890 is a deficient number, since it is larger than the sum of its proper divisors (61944790).

73401890 is a wasteful number, since it uses less digits than its factorization.

73401890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179077.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 73401890 is about 8567.4902976309. The cubic root of 73401890 is about 418.6994729264.

The spelling of 73401890 in words is "seventy-three million, four hundred one thousand, eight hundred ninety".