61390234 has 4 divisors (see below), whose sum is σ = 92085354. Its totient is φ = 30695116.

The previous prime is 61390229. The next prime is 61390237. The reversal of 61390234 is 43209316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44555625 + 16834609 = 6675^2 + 4103^2 .

It is not an unprimeable number, because it can be changed into a prime (61390237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15347557 + ... + 15347560.

Almost surely, 2^61390234 is an apocalyptic number.

61390234 is a deficient number, since it is larger than the sum of its proper divisors (30695120).

61390234 is a wasteful number, since it uses less digits than its factorization.

61390234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30695119.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 61390234 is about 7835.1920206208. The cubic root of 61390234 is about 394.4873636092.

The spelling of 61390234 in words is "sixty-one million, three hundred ninety thousand, two hundred thirty-four".