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40872038 = 220436019
BaseRepresentation
bin1001101111101…
…0100001100110
32211220111220012
42123322201212
540430401123
64020010222
71004256314
oct233724146
984814805
1040872038
1121086849
1211830972
13861074c
1455dd0b4
1538c5378
hex26fa866

40872038 has 4 divisors (see below), whose sum is σ = 61308060. Its totient is φ = 20436018.

The previous prime is 40872037. The next prime is 40872053. The reversal of 40872038 is 83027804.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40871995 and 40872013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40872037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218008 + ... + 10218011.

It is an arithmetic number, because the mean of its divisors is an integer number (15327015).

Almost surely, 240872038 is an apocalyptic number.

40872038 is a deficient number, since it is larger than the sum of its proper divisors (20436022).

40872038 is a wasteful number, since it uses less digits than its factorization.

40872038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20436021.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 40872038 is about 6393.1242753446. The cubic root of 40872038 is about 344.4626178487.

The spelling of 40872038 in words is "forty million, eight hundred seventy-two thousand, thirty-eight".

Divisors: 1 2 20436019 40872038