73023720 has 192 divisors, whose sum is σ = 278251200. Its totient is φ = 15160320.

The previous prime is 73023719. The next prime is 73023793. The reversal of 73023720 is 2732037.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64116 + ... + 65244.

It is an arithmetic number, because the mean of its divisors is an integer number (1449225).

Almost surely, 2^73023720 is an apocalyptic number.

73023720 is a gapful number since it is divisible by the number (70) 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 73023720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139125600).

73023720 is an abundant number, since it is smaller than the sum of its proper divisors (205227480).

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

73023720 is a wasteful number, since it uses less digits than its factorization.

73023720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 73023720 is about 8545.3917405816. The cubic root of 73023720 is about 417.9791813689.

Adding to 73023720 its reverse (2732037), we get a palindrome (75755757).

The spelling of 73023720 in words is "seventy-three million, twenty-three thousand, seven hundred twenty".