73861770 has 64 divisors (see below), whose sum is σ = 188770176. Its totient is φ = 18432000.

The previous prime is 73861757. The next prime is 73861771. The reversal of 73861770 is 7716837.

It is a super-2 number, since 2×73861770² = 10911122135065800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73861771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127722 + ... + 128298.

It is an arithmetic number, because the mean of its divisors is an integer number (2949534).

Almost surely, 2^73861770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73861770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94385088).

73861770 is an abundant number, since it is smaller than the sum of its proper divisors (114908406).

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

73861770 is a wasteful number, since it uses less digits than its factorization.

73861770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 73861770 is about 8594.2870559459. The cubic root of 73861770 is about 419.5720698069.

The spelling of 73861770 in words is "seventy-three million, eight hundred sixty-one thousand, seven hundred seventy".