740221540 has 12 divisors (see below), whose sum is σ = 1554465276. Its totient is φ = 296088608.

The previous prime is 740221499. The next prime is 740221577. The reversal of 740221540 is 45122047.

It can be written as a sum of positive squares in 2 ways, for example, as 145154304 + 595067236 = 12048^2 + 24394^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18505519 + ... + 18505558.

It is an arithmetic number, because the mean of its divisors is an integer number (129538773).

Almost surely, 2^740221540 is an apocalyptic number.

It is an amenable number.

740221540 is an abundant number, since it is smaller than the sum of its proper divisors (814243736).

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

740221540 is a wasteful number, since it uses less digits than its factorization.

740221540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37011086 (or 37011084 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 740221540 is about 27207.0126989348. The cubic root of 740221540 is about 904.5944236421.

Adding to 740221540 its reverse (45122047), we get a palindrome (785343587).

The spelling of 740221540 in words is "seven hundred forty million, two hundred twenty-one thousand, five hundred forty".