73716440 has 32 divisors (see below), whose sum is σ = 189557280. Its totient is φ = 25274112.

The previous prime is 73716431. The next prime is 73716457. The reversal of 73716440 is 4461737.

It is a happy number.

It is a super-2 number, since 2×73716440² = 10868227052547200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73716397 and 73716406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131357 + ... + 131916.

It is an arithmetic number, because the mean of its divisors is an integer number (5923665).

Almost surely, 2^73716440 is an apocalyptic number.

73716440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73716440 is an abundant number, since it is smaller than the sum of its proper divisors (115840840).

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

73716440 is a wasteful number, since it uses less digits than its factorization.

73716440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263291 (or 263287 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 73716440 is about 8585.8278575802. The cubic root of 73716440 is about 419.2967065847.

The spelling of 73716440 in words is "seventy-three million, seven hundred sixteen thousand, four hundred forty".