1187478 has 24 divisors (see below), whose sum is σ = 2643888. Its totient is φ = 384912.

The previous prime is 1187471. The next prime is 1187479. The reversal of 1187478 is 8747811.

1187478 is a `hidden beast` number, since 1 + 187 + 478 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (110162).

2^1187478 is an apocalyptic number.

1187478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1187478 is an abundant number, since it is smaller than the sum of its proper divisors (1456410).

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

1187478 is a wasteful number, since it uses less digits than its factorization.

1187478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828 (or 1825 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 1187478 is about 1089.7146415461. The cubic root of 1187478 is about 105.8949356506.

The spelling of 1187478 in words is "one million, one hundred eighty-seven thousand, four hundred seventy-eight".