537639740 has 24 divisors (see below), whose sum is σ = 1231684272. Its totient is φ = 195505280.

The previous prime is 537639737. The next prime is 537639763. The reversal of 537639740 is 47936735.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 537639691 and 537639700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221689 + ... + 1222128.

It is an arithmetic number, because the mean of its divisors is an integer number (51320178).

Almost surely, 2^537639740 is an apocalyptic number.

It is an amenable number.

537639740 is an abundant number, since it is smaller than the sum of its proper divisors (694044532).

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

537639740 is a wasteful number, since it uses less digits than its factorization.

537639740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443837 (or 2443835 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 44.

The square root of 537639740 is about 23187.0597532331. The cubic root of 537639740 is about 813.1371204697.

The spelling of 537639740 in words is "five hundred thirty-seven million, six hundred thirty-nine thousand, seven hundred forty".