16749957 has 16 divisors (see below), whose sum is σ = 26634240. Its totient is φ = 9154992.

The previous prime is 16749949. The next prime is 16749979. The reversal of 16749957 is 75994761.

It is a happy number.

It is not a de Polignac number, because 16749957 - 2³ = 16749949 is a prime.

It is a super-2 number, since 2×16749957² = 561122119003698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16749157) 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, 16857 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (1664640).

Almost surely, 2^16749957 is an apocalyptic number.

It is an amenable number.

16749957 is a deficient number, since it is larger than the sum of its proper divisors (9884283).

16749957 is a wasteful number, since it uses less digits than its factorization.

16749957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34712.

The product of its digits is 476280, while the sum is 48.

The square root of 16749957 is about 4092.6711326467. The cubic root of 16749957 is about 255.8612783993.

The spelling of 16749957 in words is "sixteen million, seven hundred forty-nine thousand, nine hundred fifty-seven".