73770000 has 100 divisors (see below), whose sum is σ = 238236240. Its totient is φ = 19664000.

The previous prime is 73769977. The next prime is 73770007. The reversal of 73770000 is 7737.

It is a tau number, because it is divible by the number of its divisors (100).

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

It is not an unprimeable number, because it can be changed into a prime (73770007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28771 + ... + 31229.

Almost surely, 2^73770000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73770000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119118120).

73770000 is an abundant number, since it is smaller than the sum of its proper divisors (164466240).

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

73770000 is a wasteful number, since it uses less digits than its factorization.

73770000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 1029, while the sum is 24.

The square root of 73770000 is about 8588.9463847436. The cubic root of 73770000 is about 419.3982311782.

Adding to 73770000 its reverse (7737), we get a palindrome (73777737).

The spelling of 73770000 in words is "seventy-three million, seven hundred seventy thousand".