12494778 has 8 divisors (see below), whose sum is σ = 24989568. Its totient is φ = 4164924.

The previous prime is 12494777. The next prime is 12494821. The reversal of 12494778 is 87749421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12494778 is an admirable number.

It is a super-2 number, since 2×12494778² = 312238954538568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12494771) 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, 1041226 + ... + 1041237.

It is an arithmetic number, because the mean of its divisors is an integer number (3123696).

Almost surely, 2^12494778 is an apocalyptic number.

12494778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12494778 is a wasteful number, since it uses less digits than its factorization.

12494778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082468.

The product of its digits is 112896, while the sum is 42.

The square root of 12494778 is about 3534.7953264652. The cubic root of 12494778 is about 232.0471193434.

The spelling of 12494778 in words is "twelve million, four hundred ninety-four thousand, seven hundred seventy-eight".