53730390 has 32 divisors (see below), whose sum is σ = 147375360. Its totient is φ = 12281184.

The previous prime is 53730373. The next prime is 53730407. The reversal of 53730390 is 9303735.

It is an interprime number because it is at equal distance from previous prime (53730373) and next prime (53730407).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 127720 + ... + 128139.

It is an arithmetic number, because the mean of its divisors is an integer number (4605480).

Almost surely, 2^53730390 is an apocalyptic number.

53730390 is an abundant number, since it is smaller than the sum of its proper divisors (93644970).

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

53730390 is a wasteful number, since it uses less digits than its factorization.

53730390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255876.

The product of its (nonzero) digits is 8505, while the sum is 30.

The square root of 53730390 is about 7330.1016364031. The cubic root of 53730390 is about 377.3462145697.

The spelling of 53730390 in words is "fifty-three million, seven hundred thirty thousand, three hundred ninety".