501720948 has 36 divisors (see below), whose sum is σ = 1269206848. Its totient is φ = 167112720.

The previous prime is 501720943. The next prime is 501720953. The reversal of 501720948 is 849027105.

It is an interprime number because it is at equal distance from previous prime (501720943) and next prime (501720953).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501720941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50565 + ... + 59667.

Almost surely, 2^501720948 is an apocalyptic number.

It is an amenable number.

501720948 is an abundant number, since it is smaller than the sum of its proper divisors (767485900).

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

501720948 is a wasteful number, since it uses less digits than its factorization.

501720948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10644 (or 10639 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 501720948 is about 22399.1282866097. The cubic root of 501720948 is about 794.6100947890.

The spelling of 501720948 in words is "five hundred one million, seven hundred twenty thousand, nine hundred forty-eight".