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2669940 = 22325713163
BaseRepresentation
bin1010001011110101110100
312000122110200
422023311310
51140414230
6133120500
731460040
oct12136564
95018420
102669940
111563a69
12a89130
13726360
144d7020
1537b160
hex28bd74

2669940 has 144 divisors (see below), whose sum is σ = 10028928. Its totient is φ = 559872.

The previous prime is 2669903. The next prime is 2669951. The reversal of 2669940 is 499662.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2669895 and 2669904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16299 + ... + 16461.

22669940 is an apocalyptic number.

2669940 is a gapful number since it is divisible by the number (20) 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 2669940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5014464).

2669940 is an abundant number, since it is smaller than the sum of its proper divisors (7358988).

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

2669940 is a wasteful number, since it uses less digits than its factorization.

2669940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2669940 is about 1633.9951040318. The cubic root of 2669940 is about 138.7289717341.

The spelling of 2669940 in words is "two million, six hundred sixty-nine thousand, nine hundred forty".