29742390 has 80 divisors (see below), whose sum is σ = 81230688. Its totient is φ = 7807104.

The previous prime is 29742389. The next prime is 29742409. The reversal of 29742390 is 9324792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 58879 + ... + 59381.

Almost surely, 2^29742390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29742390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40615344).

29742390 is an abundant number, since it is smaller than the sum of its proper divisors (51488298).

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

29742390 is a wasteful number, since it uses less digits than its factorization.

29742390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 29742390 is about 5453.6584051442. The cubic root of 29742390 is about 309.8312991225.

The spelling of 29742390 in words is "twenty-nine million, seven hundred forty-two thousand, three hundred ninety".