1285700 has 72 divisors (see below), whose sum is σ = 3208128. Its totient is φ = 443520.

The previous prime is 1285699. The next prime is 1285703. The reversal of 1285700 is 75821.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1285703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29879 + ... + 29921.

2^1285700 is an apocalyptic number.

1285700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604064).

1285700 is an abundant number, since it is smaller than the sum of its proper divisors (1922428).

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

1285700 is a wasteful number, since it uses less digits than its factorization.

1285700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 1285700 is about 1133.8871196023. The cubic root of 1285700 is about 108.7376345653.

The spelling of 1285700 in words is "one million, two hundred eighty-five thousand, seven hundred".