16406740 has 24 divisors (see below), whose sum is σ = 39376512. Its totient is φ = 5625120.

The previous prime is 16406711. The next prime is 16406773. The reversal of 16406740 is 4760461.

It is a super-2 number, since 2×16406740² = 538362234855200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 16406699 and 16406708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58456 + ... + 58735.

It is an arithmetic number, because the mean of its divisors is an integer number (1640688).

Almost surely, 2^16406740 is an apocalyptic number.

16406740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16406740 is an abundant number, since it is smaller than the sum of its proper divisors (22969772).

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

16406740 is a wasteful number, since it uses less digits than its factorization.

16406740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117207 (or 117205 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16406740 is about 4050.5234229665. The cubic root of 16406740 is about 254.1016188761.

The spelling of 16406740 in words is "sixteen million, four hundred six thousand, seven hundred forty".