61426390 has 16 divisors (see below), whose sum is σ = 112381200. Its totient is φ = 24167520.

The previous prime is 61426381. The next prime is 61426397. The reversal of 61426390 is 9362416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61426397) 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, 49740 + ... + 50959.

It is an arithmetic number, because the mean of its divisors is an integer number (7023825).

Almost surely, 2^61426390 is an apocalyptic number.

61426390 is a deficient number, since it is larger than the sum of its proper divisors (50954810).

61426390 is a wasteful number, since it uses less digits than its factorization.

61426390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100767.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 61426390 is about 7837.4989633173. The cubic root of 61426390 is about 394.5647933295.

It can be divided in two parts, 61426 and 390, that added together give a palindrome (61816).

The spelling of 61426390 in words is "sixty-one million, four hundred twenty-six thousand, three hundred ninety".