12149770 has 8 divisors (see below), whose sum is σ = 21869604. Its totient is φ = 4859904.

The previous prime is 12149749. The next prime is 12149771. The reversal of 12149770 is 7794121.

It can be written as a sum of positive squares in 2 ways, for example, as 11377129 + 772641 = 3373^2 + 879^2 .

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

It is a super-2 number, since 2×12149770² = 295233822105800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12149771) 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, 607479 + ... + 607498.

Almost surely, 2^12149770 is an apocalyptic number.

12149770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12149770 is a deficient number, since it is larger than the sum of its proper divisors (9719834).

12149770 is a wasteful number, since it uses less digits than its factorization.

12149770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214984.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 12149770 is about 3485.6520193502. The cubic root of 12149770 is about 229.8913790820.

The spelling of 12149770 in words is "twelve million, one hundred forty-nine thousand, seven hundred seventy".