72120484 has 6 divisors (see below), whose sum is σ = 126210854. Its totient is φ = 36060240.

The previous prime is 72120481. The next prime is 72120487. The reversal of 72120484 is 48402127.

It is an interprime number because it is at equal distance from previous prime (72120481) and next prime (72120487).

It can be written as a sum of positive squares in only one way, i.e., 47914084 + 24206400 = 6922^2 + 4920^2 .

It is not an unprimeable number, because it can be changed into a prime (72120481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015057 + ... + 9015064.

Almost surely, 2^72120484 is an apocalyptic number.

It is an amenable number.

72120484 is a deficient number, since it is larger than the sum of its proper divisors (54090370).

72120484 is a wasteful number, since it uses less digits than its factorization.

72120484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18030125 (or 18030123 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 72120484 is about 8492.3779944136. The cubic root of 72120484 is about 416.2486879030.

The spelling of 72120484 in words is "seventy-two million, one hundred twenty thousand, four hundred eighty-four".