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2680401 = 36197151
BaseRepresentation
bin1010001110011001010001
312001011211010
422032121101
51141233101
6133241133
731532403
oct12163121
95034733
102680401
111570909
12a931a9
1372b049
144dab73
1537e2d6
hex28e651

2680401 has 16 divisors (see below), whose sum is σ = 3694208. Its totient is φ = 1728000.

The previous prime is 2680399. The next prime is 2680409. The reversal of 2680401 is 1040862.

It is not a de Polignac number, because 2680401 - 21 = 2680399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17676 + ... + 17826.

It is an arithmetic number, because the mean of its divisors is an integer number (230888).

22680401 is an apocalyptic number.

It is an amenable number.

2680401 is a deficient number, since it is larger than the sum of its proper divisors (1013807).

2680401 is a wasteful number, since it uses less digits than its factorization.

2680401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2680401 is about 1637.1930246614. The cubic root of 2680401 is about 138.9099186882.

It can be divided in two parts, 2680 and 401, that added together give a triangular number (3081 = T78).

The spelling of 2680401 in words is "two million, six hundred eighty thousand, four hundred one".

Divisors: 1 3 61 97 151 183 291 453 5917 9211 14647 17751 27633 43941 893467 2680401