61228398 has 32 divisors (see below), whose sum is σ = 152674560. Its totient is φ = 15903360.

The previous prime is 61228381. The next prime is 61228399. The reversal of 61228398 is 89382216.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61228399) 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, 65803 + ... + 66726.

It is an arithmetic number, because the mean of its divisors is an integer number (4771080).

Almost surely, 2^61228398 is an apocalyptic number.

61228398 is an abundant number, since it is smaller than the sum of its proper divisors (91446162).

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

61228398 is a wasteful number, since it uses less digits than its factorization.

61228398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132552.

The product of its digits is 41472, while the sum is 39.

The square root of 61228398 is about 7824.8576983866. The cubic root of 61228398 is about 394.1404113601.

The spelling of 61228398 in words is "sixty-one million, two hundred twenty-eight thousand, three hundred ninety-eight".