73649776 has 60 divisors (see below), whose sum is σ = 154771344. Its totient is φ = 33926400.

The previous prime is 73649717. The next prime is 73649809. The reversal of 73649776 is 67794637.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 236661 + ... + 236971.

Almost surely, 2^73649776 is an apocalyptic number.

73649776 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73649776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77385672).

73649776 is an abundant number, since it is smaller than the sum of its proper divisors (81121568).

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

73649776 is a wasteful number, since it uses less digits than its factorization.

73649776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 373 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 49.

The square root of 73649776 is about 8581.9447679416. The cubic root of 73649776 is about 419.1702742455.

The spelling of 73649776 in words is "seventy-three million, six hundred forty-nine thousand, seven hundred seventy-six".