61294090 has 32 divisors (see below), whose sum is σ = 129620736. Its totient is φ = 20573760.

The previous prime is 61294043. The next prime is 61294091. The reversal of 61294090 is 9049216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61294091) 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, 20002 + ... + 22861.

It is an arithmetic number, because the mean of its divisors is an integer number (4050648).

Almost surely, 2^61294090 is an apocalyptic number.

61294090 is an abundant number, since it is smaller than the sum of its proper divisors (68326646).

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

61294090 is a wasteful number, since it uses less digits than its factorization.

61294090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42894.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 61294090 is about 7829.0542212965. The cubic root of 61294090 is about 394.2813188391.

The spelling of 61294090 in words is "sixty-one million, two hundred ninety-four thousand, ninety".