72671552 has 28 divisors (see below), whose sum is σ = 148109940. Its totient is φ = 35352576.

The previous prime is 72671551. The next prime is 72671567. The reversal of 72671552 is 25517627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69488896 + 3182656 = 8336^2 + 1784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72671551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12977 + ... + 17712.

Almost surely, 2^72671552 is an apocalyptic number.

It is an amenable number.

72671552 is an abundant number, since it is smaller than the sum of its proper divisors (75438388).

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

72671552 is a wasteful number, since it uses less digits than its factorization.

72671552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30738 (or 30728 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 72671552 is about 8524.7611110224. The cubic root of 72671552 is about 417.3061755836.

The spelling of 72671552 in words is "seventy-two million, six hundred seventy-one thousand, five hundred fifty-two".