29140621 has 8 divisors (see below), whose sum is σ = 30447000. Its totient is φ = 27854400.

The previous prime is 29140603. The next prime is 29140637. The reversal of 29140621 is 12604192.

It can be written as a sum of positive squares in 4 ways, for example, as 10530025 + 18610596 = 3245^2 + 4314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29140621 - 2¹⁷ = 29009549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29140691) 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, 2046 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (3805875).

Almost surely, 2^29140621 is an apocalyptic number.

It is an amenable number.

29140621 is a deficient number, since it is larger than the sum of its proper divisors (1306379).

29140621 is a wasteful number, since it uses less digits than its factorization.

29140621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10079.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 29140621 is about 5398.2053499288. The cubic root of 29140621 is about 307.7274708804.

The spelling of 29140621 in words is "twenty-nine million, one hundred forty thousand, six hundred twenty-one".