16507090 has 16 divisors (see below), whose sum is σ = 30737880. Its totient is φ = 6375040.

The previous prime is 16507081. The next prime is 16507091. The reversal of 16507090 is 9070561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15816529 + 690561 = 3977^2 + 831^2 .

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16507091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28171 + ... + 28750.

Almost surely, 2^16507090 is an apocalyptic number.

16507090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16507090 is a deficient number, since it is larger than the sum of its proper divisors (14230790).

16507090 is a wasteful number, since it uses less digits than its factorization.

16507090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56957.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 16507090 is about 4062.8918272580. The cubic root of 16507090 is about 254.6186276568.

Subtracting from 16507090 its reverse (9070561), we obtain a square (7436529 = 2727²).

The spelling of 16507090 in words is "sixteen million, five hundred seven thousand, ninety".