13923690 has 32 divisors (see below), whose sum is σ = 36455616. Its totient is φ = 3375360.

The previous prime is 13923673. The next prime is 13923691. The reversal of 13923690 is 9632931.

It is a super-2 number, since 2×13923690² = 387738286432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (13923691) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20767 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (1139238).

Almost surely, 2^13923690 is an apocalyptic number.

13923690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13923690 is an abundant number, since it is smaller than the sum of its proper divisors (22531926).

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

13923690 is a wasteful number, since it uses less digits than its factorization.

13923690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42214.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 13923690 is about 3731.4461003745. The cubic root of 13923690 is about 240.5755284814.

The spelling of 13923690 in words is "thirteen million, nine hundred twenty-three thousand, six hundred ninety".