29676780 has 120 divisors (see below), whose sum is σ = 106437408. Its totient is φ = 6780672.

The previous prime is 29676761. The next prime is 29676799. The reversal of 29676780 is 8767692.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (29676761) and next prime (29676799).

It is a super-2 number, since 2×29676780² = 1761422542336800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10032 + ... + 12648.

Almost surely, 2^29676780 is an apocalyptic number.

29676780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29676780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53218704).

29676780 is an abundant number, since it is smaller than the sum of its proper divisors (76760628).

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

29676780 is a wasteful number, since it uses less digits than its factorization.

29676780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 29676780 is about 5447.6398559376. The cubic root of 29676780 is about 309.6033080591.

The spelling of 29676780 in words is "twenty-nine million, six hundred seventy-six thousand, seven hundred eighty".