1287206070 has 64 divisors (see below), whose sum is σ = 3194009280. Its totient is φ = 331776000.

The previous prime is 1287206069. The next prime is 1287206099. The reversal of 1287206070 is 706027821.

1287206070 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129270 + ... + 138870.

It is an arithmetic number, because the mean of its divisors is an integer number (49906395).

Almost surely, 2^1287206070 is an apocalyptic number.

1287206070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1287206070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597004640).

1287206070 is an abundant number, since it is smaller than the sum of its proper divisors (1906803210).

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

1287206070 is a wasteful number, since it uses less digits than its factorization.

1287206070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1287206070 is about 35877.6541875302. The cubic root of 1287206070 is about 1087.8007644795.

The spelling of 1287206070 in words is "one billion, two hundred eighty-seven million, two hundred six thousand, seventy".