11990454 has 32 divisors (see below), whose sum is σ = 27822336. Its totient is φ = 3373920.

The previous prime is 11990453. The next prime is 11990467. The reversal of 11990454 is 45409911.

It is a super-2 number, since 2×11990454² = 287541974252232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990453) 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, 684 + ... + 4944.

It is an arithmetic number, because the mean of its divisors is an integer number (869448).

Almost surely, 2^11990454 is an apocalyptic number.

11990454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11990454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13911168).

11990454 is an abundant number, since it is smaller than the sum of its proper divisors (15831882).

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

11990454 is a wasteful number, since it uses less digits than its factorization.

11990454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4340.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 11990454 is about 3462.7234945921. The cubic root of 11990454 is about 228.8821243938.

The spelling of 11990454 in words is "eleven million, nine hundred ninety thousand, four hundred fifty-four".