73649380 has 24 divisors (see below), whose sum is σ = 176758848. Its totient is φ = 25251168.

The previous prime is 73649363. The next prime is 73649413. The reversal of 73649380 is 8394637.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262894 + ... + 263173.

It is an arithmetic number, because the mean of its divisors is an integer number (7364952).

Almost surely, 2^73649380 is an apocalyptic number.

73649380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73649380 is an abundant number, since it is smaller than the sum of its proper divisors (103109468).

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

73649380 is a wasteful number, since it uses less digits than its factorization.

73649380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526083 (or 526081 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 73649380 is about 8581.9216962170. The cubic root of 73649380 is about 419.1695229795.

The spelling of 73649380 in words is "seventy-three million, six hundred forty-nine thousand, three hundred eighty".