29072980 has 24 divisors (see below), whose sum is σ = 61892712. Its totient is φ = 11469312.

The previous prime is 29072971. The next prime is 29072987. The reversal of 29072980 is 8927092.

It can be written as a sum of positive squares in 4 ways, for example, as 42436 + 29030544 = 206^2 + 5388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29072987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8497 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (2578863).

Almost surely, 2^29072980 is an apocalyptic number.

29072980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29072980 is an abundant number, since it is smaller than the sum of its proper divisors (32819732).

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

29072980 is a wasteful number, since it uses less digits than its factorization.

29072980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19995 (or 19993 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 29072980 is about 5391.9365723272. The cubic root of 29072980 is about 307.4891881540.

The spelling of 29072980 in words is "twenty-nine million, seventy-two thousand, nine hundred eighty".