169367940 has 144 divisors (see below), whose sum is σ = 621758592. Its totient is φ = 36430848.

The previous prime is 169367897. The next prime is 169367941. The reversal of 169367940 is 49763961.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (169367941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17467 + ... + 25373.

It is an arithmetic number, because the mean of its divisors is an integer number (4317768).

Almost surely, 2^169367940 is an apocalyptic number.

169367940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169367940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310879296).

169367940 is an abundant number, since it is smaller than the sum of its proper divisors (452390652).

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

169367940 is a wasteful number, since it uses less digits than its factorization.

169367940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946 (or 7941 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 169367940 is about 13014.1438442949. The cubic root of 169367940 is about 553.2784247381.

It can be divided in two parts, 16 and 9367940, that added together give a triangular number (9367956 = T₄₃₂₈).

The spelling of 169367940 in words is "one hundred sixty-nine million, three hundred sixty-seven thousand, nine hundred forty".