1363890 has 32 divisors (see below), whose sum is σ = 3571776. Its totient is φ = 330560.

The previous prime is 1363883. The next prime is 1363891. The reversal of 1363890 is 983631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1737 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (111618).

2^1363890 is an apocalyptic number.

1363890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1363890 is an abundant number, since it is smaller than the sum of its proper divisors (2207886).

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

1363890 is a wasteful number, since it uses less digits than its factorization.

1363890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1363890 is about 1167.8570117955. The cubic root of 1363890 is about 110.8986982599.

It can be divided in two parts, 13 and 63890, that added together give a triangular number (63903 = T₃₅₇).

The spelling of 1363890 in words is "one million, three hundred sixty-three thousand, eight hundred ninety".