61232290 has 32 divisors (see below), whose sum is σ = 126288000. Its totient is φ = 20939904.

The previous prime is 61232273. The next prime is 61232291. The reversal of 61232290 is 9223216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61232291) 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, 34054 + ... + 35806.

It is an arithmetic number, because the mean of its divisors is an integer number (3946500).

Almost surely, 2^61232290 is an apocalyptic number.

61232290 is an abundant number, since it is smaller than the sum of its proper divisors (65055710).

61232290 is a wasteful number, since it uses less digits than its factorization.

61232290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 61232290 is about 7825.1063890531. The cubic root of 61232290 is about 394.1487623978.

The spelling of 61232290 in words is "sixty-one million, two hundred thirty-two thousand, two hundred ninety".