1367990 has 32 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 474624.

The previous prime is 1367987. The next prime is 1368013. The reversal of 1367990 is 997631.

1367990 = 136² + 137² + ... + 187².

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1367990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1901 + ... + 2519.

It is an arithmetic number, because the mean of its divisors is an integer number (87885).

2^1367990 is an apocalyptic number.

1367990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1367990 is an abundant number, since it is smaller than the sum of its proper divisors (1444330).

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

1367990 is a wasteful number, since it uses less digits than its factorization.

1367990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1367990 is about 1169.6110464595. The cubic root of 1367990 is about 111.0097115654.

The spelling of 1367990 in words is "one million, three hundred sixty-seven thousand, nine hundred ninety".