12629890 has 32 divisors (see below), whose sum is σ = 27982080. Its totient is φ = 3996864.

The previous prime is 12629879. The next prime is 12629891. The reversal of 12629890 is 9892621.

It is not an unprimeable number, because it can be changed into a prime (12629891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6030 + ... + 7849.

It is an arithmetic number, because the mean of its divisors is an integer number (874440).

Almost surely, 2^12629890 is an apocalyptic number.

12629890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12629890 is an abundant number, since it is smaller than the sum of its proper divisors (15352190).

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

12629890 is a wasteful number, since it uses less digits than its factorization.

12629890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13906.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 12629890 is about 3553.8556526680. The cubic root of 12629890 is about 232.8805345809.

It can be divided in two parts, 126 and 29890, that multiplied together give a triangular number (3766140 = T₂₇₄₄).

The spelling of 12629890 in words is "twelve million, six hundred twenty-nine thousand, eight hundred ninety".