73740156 has 48 divisors (see below), whose sum is σ = 203427840. Its totient is φ = 20341440.

The previous prime is 73740151. The next prime is 73740187. The reversal of 73740156 is 65104737.

It is a super-2 number, since 2×73740156² = 10875221213808672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73740151) 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, 12700 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (4238080).

Almost surely, 2^73740156 is an apocalyptic number.

It is an amenable number.

73740156 is an abundant number, since it is smaller than the sum of its proper divisors (129687684).

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

73740156 is a wasteful number, since it uses less digits than its factorization.

73740156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30314 (or 30312 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 73740156 is about 8587.2088596936. The cubic root of 73740156 is about 419.3416670417.

The spelling of 73740156 in words is "seventy-three million, seven hundred forty thousand, one hundred fifty-six".