13401990 has 96 divisors (see below), whose sum is σ = 41614560. Its totient is φ = 3060288.

The previous prime is 13401989. The next prime is 13402007. The reversal of 13401990 is 9910431.

It is a super-2 number, since 2×13401990² = 359226671920200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12724 + ... + 13736.

It is an arithmetic number, because the mean of its divisors is an integer number (433485).

Almost surely, 2^13401990 is an apocalyptic number.

13401990 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 13401990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20807280).

13401990 is an abundant number, since it is smaller than the sum of its proper divisors (28212570).

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

13401990 is a wasteful number, since it uses less digits than its factorization.

13401990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13401990 is about 3660.8728467402. The cubic root of 13401990 is about 237.5325310933.

The spelling of 13401990 in words is "thirteen million, four hundred one thousand, nine hundred ninety".