73186890 has 48 divisors (see below), whose sum is σ = 204329952. Its totient is φ = 16728096.

The previous prime is 73186829. The next prime is 73186961. The reversal of 73186890 is 9868137.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23424 + ... + 26363.

It is an arithmetic number, because the mean of its divisors is an integer number (4256874).

Almost surely, 2^73186890 is an apocalyptic number.

73186890 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

73186890 is an abundant number, since it is smaller than the sum of its proper divisors (131143062).

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

73186890 is a wasteful number, since it uses less digits than its factorization.

73186890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49811 (or 49804 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 73186890 is about 8554.9336642665. The cubic root of 73186890 is about 418.2902717360.

The spelling of 73186890 in words is "seventy-three million, one hundred eighty-six thousand, eight hundred ninety".