123727772 has 24 divisors (see below), whose sum is σ = 260480640. Its totient is φ = 50235120.

The previous prime is 123727771. The next prime is 123727777. The reversal of 123727772 is 277727321.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123727771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115754 + ... + 116817.

It is an arithmetic number, because the mean of its divisors is an integer number (10853360).

Almost surely, 2^123727772 is an apocalyptic number.

It is an amenable number.

123727772 is an abundant number, since it is smaller than the sum of its proper divisors (136752868).

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

123727772 is a wasteful number, since it uses less digits than its factorization.

123727772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232601 (or 232599 counting only the distinct ones).

The product of its digits is 57624, while the sum is 38.

The square root of 123727772 is about 11123.2986114731. The cubic root of 123727772 is about 498.2979083429.

The spelling of 123727772 in words is "one hundred twenty-three million, seven hundred twenty-seven thousand, seven hundred seventy-two".