18206734 has 48 divisors (see below), whose sum is σ = 35392896. Its totient is φ = 6955200.

The previous prime is 18206729. The next prime is 18206737. The reversal of 18206734 is 43760281.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 18206696 and 18206705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18206737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39264 + ... + 39724.

It is an arithmetic number, because the mean of its divisors is an integer number (737352).

Almost surely, 2^18206734 is an apocalyptic number.

18206734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18206734 is a deficient number, since it is larger than the sum of its proper divisors (17186162).

18206734 is a wasteful number, since it uses less digits than its factorization.

18206734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 18206734 is about 4266.9349655227. The cubic root of 18206734 is about 263.0736491776.

The spelling of 18206734 in words is "eighteen million, two hundred six thousand, seven hundred thirty-four".