145092690 has 24 divisors (see below), whose sum is σ = 377241228. Its totient is φ = 38691360.

The previous prime is 145092659. The next prime is 145092719. The reversal of 145092690 is 96290541.

It can be written as a sum of positive squares in 2 ways, for example, as 141776649 + 3316041 = 11907^2 + 1821^2 .

It is a super-2 number, since 2×145092690² = 42103777382872200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 805981 + ... + 806160.

Almost surely, 2^145092690 is an apocalyptic number.

145092690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145092690 is an abundant number, since it is smaller than the sum of its proper divisors (232148538).

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

145092690 is a wasteful number, since it uses less digits than its factorization.

145092690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612154 (or 1612151 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 145092690 is about 12045.4427066837. The cubic root of 145092690 is about 525.4707070967.

The spelling of 145092690 in words is "one hundred forty-five million, ninety-two thousand, six hundred ninety".