29711421 has 16 divisors (see below), whose sum is σ = 46334400. Its totient is φ = 18764784.

The previous prime is 29711419. The next prime is 29711443. The reversal of 29711421 is 12411792.

It is not a de Polignac number, because 29711421 - 2¹ = 29711419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29711411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28446 + ... + 29471.

It is an arithmetic number, because the mean of its divisors is an integer number (2895900).

Almost surely, 2^29711421 is an apocalyptic number.

It is an amenable number.

29711421 is a deficient number, since it is larger than the sum of its proper divisors (16622979).

29711421 is a wasteful number, since it uses less digits than its factorization.

29711421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57945 (or 57939 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 29711421 is about 5450.8183789226. The cubic root of 29711421 is about 309.7237254123.

The spelling of 29711421 in words is "twenty-nine million, seven hundred eleven thousand, four hundred twenty-one".