87723738 has 24 divisors (see below), whose sum is σ = 196200576. Its totient is φ = 28297800.

The previous prime is 87723731. The next prime is 87723739. The reversal of 87723738 is 83732778.

It is a junction number, because it is equal to n+sod(n) for n = 87723693 and 87723702.

It is not an unprimeable number, because it can be changed into a prime (87723731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78048 + ... + 79163.

It is an arithmetic number, because the mean of its divisors is an integer number (8175024).

Almost surely, 2^87723738 is an apocalyptic number.

87723738 is an abundant number, since it is smaller than the sum of its proper divisors (108476838).

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

87723738 is a wasteful number, since it uses less digits than its factorization.

87723738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157250 (or 157247 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 87723738 is about 9366.0951308429. The cubic root of 87723738 is about 444.3300747429.

The spelling of 87723738 in words is "eighty-seven million, seven hundred twenty-three thousand, seven hundred thirty-eight".