12157070 has 16 divisors (see below), whose sum is σ = 21999600. Its totient is φ = 4836864.

The previous prime is 12157069. The next prime is 12157129. The reversal of 12157070 is 7075121.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220 + ... + 5079.

It is an arithmetic number, because the mean of its divisors is an integer number (1374975).

Almost surely, 2^12157070 is an apocalyptic number.

12157070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12157070 is a deficient number, since it is larger than the sum of its proper divisors (9842530).

12157070 is a wasteful number, since it uses less digits than its factorization.

12157070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 12157070 is about 3486.6990119596. The cubic root of 12157070 is about 229.9374120816.

The spelling of 12157070 in words is "twelve million, one hundred fifty-seven thousand, seventy".