1285707150 has 144 divisors (see below), whose sum is σ = 4251540384. Its totient is φ = 271261440.

The previous prime is 1285707119. The next prime is 1285707221. The reversal of 1285707150 is 517075821.

1285707150 is a `hidden beast` number, since 12 + 8 + 570 + 71 + 5 + 0 = 666.

It is a super-2 number, since 2×1285707150² = 3306085751122245000, which contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 25252 + ... + 56648.

It is an arithmetic number, because the mean of its divisors is an integer number (29524586).

Almost surely, 2^1285707150 is an apocalyptic number.

1285707150 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 1285707150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2125770192).

1285707150 is an abundant number, since it is smaller than the sum of its proper divisors (2965833234).

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

1285707150 is a wasteful number, since it uses less digits than its factorization.

1285707150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31435 (or 31427 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 36.

The square root of 1285707150 is about 35856.7587771120. The cubic root of 1285707150 is about 1087.3783613455.

The spelling of 1285707150 in words is "one billion, two hundred eighty-five million, seven hundred seven thousand, one hundred fifty".