1203864 has 32 divisors (see below), whose sum is σ = 3045120. Its totient is φ = 396576.

The previous prime is 1203863. The next prime is 1203887. The reversal of 1203864 is 4683021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2229 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (95160).

2^1203864 is an apocalyptic number.

It is an amenable number.

1203864 is an abundant number, since it is smaller than the sum of its proper divisors (1841256).

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

1203864 is a wasteful number, since it uses less digits than its factorization.

1203864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1203864 is about 1097.2073641751. The cubic root of 1203864 is about 106.3797934002.

Adding to 1203864 its reverse (4683021), we get a palindrome (5886885).

The spelling of 1203864 in words is "one million, two hundred three thousand, eight hundred sixty-four".