53706740 has 48 divisors (see below), whose sum is σ = 120394512. Its totient is φ = 20054016.

The previous prime is 53706739. The next prime is 53706773. The reversal of 53706740 is 4760735.

It can be written as a sum of positive squares in 8 ways, for example, as 3976036 + 49730704 = 1994^2 + 7052^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53706697 and 53706706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46004 + ... + 47156.

It is an arithmetic number, because the mean of its divisors is an integer number (2508219).

Almost surely, 2^53706740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53706740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60197256).

53706740 is an abundant number, since it is smaller than the sum of its proper divisors (66687772).

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

53706740 is a wasteful number, since it uses less digits than its factorization.

53706740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 53706740 is about 7328.4882479267. The cubic root of 53706740 is about 377.2908421342.

The spelling of 53706740 in words is "fifty-three million, seven hundred six thousand, seven hundred forty".