72051837 has 16 divisors (see below), whose sum is σ = 112865088. Its totient is φ = 40308480.

The previous prime is 72051823. The next prime is 72051841. The reversal of 72051837 is 73815027.

It is not a de Polignac number, because 72051837 - 2⁴ = 72051821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 72051798 and 72051807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72051817) 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, 83548 + ... + 84405.

It is an arithmetic number, because the mean of its divisors is an integer number (7054068).

Almost surely, 2^72051837 is an apocalyptic number.

It is an amenable number.

72051837 is a deficient number, since it is larger than the sum of its proper divisors (40813251).

72051837 is a wasteful number, since it uses less digits than its factorization.

72051837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167980.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 72051837 is about 8488.3353491718. The cubic root of 72051837 is about 416.1165789057.

The spelling of 72051837 in words is "seventy-two million, fifty-one thousand, eight hundred thirty-seven".