16401954 has 16 divisors (see below), whose sum is σ = 32866848. Its totient is φ = 5456832.

The previous prime is 16401943. The next prime is 16401977. The reversal of 16401954 is 45910461.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194 + ... + 5850.

It is an arithmetic number, because the mean of its divisors is an integer number (2054178).

Almost surely, 2^16401954 is an apocalyptic number.

16401954 is an abundant number, since it is smaller than the sum of its proper divisors (16464894).

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

16401954 is a wasteful number, since it uses less digits than its factorization.

16401954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 16401954 is about 4049.9325920316. The cubic root of 16401954 is about 254.0769085311.

The spelling of 16401954 in words is "sixteen million, four hundred one thousand, nine hundred fifty-four".