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2742620 = 225137131
BaseRepresentation
bin1010011101100101011100
312011100011112
422131211130
51200230440
6134441152
732211656
oct12354534
95140145
102742620
111603631
12b031b8
1375046a
145156d6
15392965
hex29d95c

2742620 has 12 divisors (see below), whose sum is σ = 5759544. Its totient is φ = 1097040.

The previous prime is 2742587. The next prime is 2742629. The reversal of 2742620 is 262472.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2742629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68546 + ... + 68585.

It is an arithmetic number, because the mean of its divisors is an integer number (479962).

22742620 is an apocalyptic number.

2742620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2742620 is an abundant number, since it is smaller than the sum of its proper divisors (3016924).

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

2742620 is a wasteful number, since it uses less digits than its factorization.

2742620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137140 (or 137138 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 2742620 is about 1656.0857465723. The cubic root of 2742620 is about 139.9765266768.

The spelling of 2742620 in words is "two million, seven hundred forty-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 137131 274262 548524 685655 1371310 2742620