123767680 has 32 divisors (see below), whose sum is σ = 295883640. Its totient is φ = 49506816.

The previous prime is 123767671. The next prime is 123767687. The reversal of 123767680 is 86767321.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×123767680² = 30636877225164800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123767687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96054 + ... + 97333.

Almost surely, 2^123767680 is an apocalyptic number.

123767680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123767680 is an abundant number, since it is smaller than the sum of its proper divisors (172115960).

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

123767680 is an equidigital number, since it uses as much as digits as its factorization.

123767680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193406 (or 193394 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 123767680 is about 11125.0923591672. The cubic root of 123767680 is about 498.3514773865.

The spelling of 123767680 in words is "one hundred twenty-three million, seven hundred sixty-seven thousand, six hundred eighty".