29977245 has 24 divisors (see below), whose sum is σ = 52205400. Its totient is φ = 15912576.

The previous prime is 29977243. The next prime is 29977253. The reversal of 29977245 is 54277992.

It can be written as a sum of positive squares in 4 ways, for example, as 15069924 + 14907321 = 3882^2 + 3861^2 .

It is not a de Polignac number, because 29977245 - 2¹ = 29977243 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 29977245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29977243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8851 + ... + 11759.

It is an arithmetic number, because the mean of its divisors is an integer number (2175225).

Almost surely, 2^29977245 is an apocalyptic number.

It is an amenable number.

29977245 is a deficient number, since it is larger than the sum of its proper divisors (22228155).

29977245 is a wasteful number, since it uses less digits than its factorization.

29977245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149 (or 3146 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 29977245 is about 5475.1479432066. The cubic root of 29977245 is about 310.6446695289.

The spelling of 29977245 in words is "twenty-nine million, nine hundred seventy-seven thousand, two hundred forty-five".