1353990 has 48 divisors (see below), whose sum is σ = 3581424. Its totient is φ = 327360.

The previous prime is 1353983. The next prime is 1354007. The reversal of 1353990 is 993531.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3444 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (74613).

2^1353990 is an apocalyptic number.

1353990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1353990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790712).

1353990 is an abundant number, since it is smaller than the sum of its proper divisors (2227434).

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

1353990 is a wasteful number, since it uses less digits than its factorization.

1353990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 1353990 is about 1163.6107596615. The cubic root of 1353990 is about 110.6297214621.

The spelling of 1353990 in words is "one million, three hundred fifty-three thousand, nine hundred ninety".