169240140 has 36 divisors (see below), whose sum is σ = 513362304. Its totient is φ = 45130656.

The previous prime is 169240111. The next prime is 169240153. The reversal of 169240140 is 41042961.

It is a tau number, because it is divible by the number of its divisors (36).

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, 469932 + ... + 470291.

It is an arithmetic number, because the mean of its divisors is an integer number (14260064).

Almost surely, 2^169240140 is an apocalyptic number.

169240140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169240140 is an abundant number, since it is smaller than the sum of its proper divisors (344122164).

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

169240140 is a wasteful number, since it uses less digits than its factorization.

169240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940238 (or 940233 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 169240140 is about 13009.2328751545. The cubic root of 169240140 is about 553.1392272506.

The spelling of 169240140 in words is "one hundred sixty-nine million, two hundred forty thousand, one hundred forty".