109288690 has 16 divisors (see below), whose sum is σ = 224822592. Its totient is φ = 37470384.

The previous prime is 109288687. The next prime is 109288717. The reversal of 109288690 is 96882901.

It is a happy number.

It is a super-2 number, since 2×109288690² = 23888035523832200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780564 + ... + 780703.

It is an arithmetic number, because the mean of its divisors is an integer number (14051412).

Almost surely, 2^109288690 is an apocalyptic number.

109288690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109288690 is an abundant number, since it is smaller than the sum of its proper divisors (115533902).

109288690 is a wasteful number, since it uses less digits than its factorization.

109288690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561281.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 109288690 is about 10454.1231100461. The cubic root of 109288690 is about 478.1069682351.

The spelling of 109288690 in words is "one hundred nine million, two hundred eighty-eight thousand, six hundred ninety".