1267400 has 24 divisors (see below), whose sum is σ = 2947170. Its totient is φ = 506880.

The previous prime is 1267381. The next prime is 1267403. The reversal of 1267400 is 47621.

1267400 = T₃₉₀ + T₃₉₁ + ... + T₄₀₅.

It can be written as a sum of positive squares in 3 ways, for example, as 850084 + 417316 = 922^2 + 646^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1267403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2969 + ... + 3368.

2^1267400 is an apocalyptic number.

1267400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1267400 is an abundant number, since it is smaller than the sum of its proper divisors (1679770).

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

1267400 is a wasteful number, since it uses less digits than its factorization.

1267400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6353 (or 6344 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1267400 is about 1125.7886124846. The cubic root of 1267400 is about 108.2192619143.

The spelling of 1267400 in words is "one million, two hundred sixty-seven thousand, four hundred".