73149690 has 32 divisors (see below), whose sum is σ = 175784256. Its totient is φ = 19481600.

The previous prime is 73149689. The next prime is 73149697. The reversal of 73149690 is 9694137.

It is a super-2 number, since 2×73149690² = 10701754294192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73149697) 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, 44890 + ... + 46490.

It is an arithmetic number, because the mean of its divisors is an integer number (5493258).

Almost surely, 2^73149690 is an apocalyptic number.

73149690 is an abundant number, since it is smaller than the sum of its proper divisors (102634566).

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

73149690 is a wasteful number, since it uses less digits than its factorization.

73149690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 73149690 is about 8552.7592039061. The cubic root of 73149690 is about 418.2193891174.

The spelling of 73149690 in words is "seventy-three million, one hundred forty-nine thousand, six hundred ninety".