61369428 has 48 divisors (see below), whose sum is σ = 152925696. Its totient is φ = 19108320.

The previous prime is 61369409. The next prime is 61369433. The reversal of 61369428 is 82496316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9283 + ... + 14453.

It is an arithmetic number, because the mean of its divisors is an integer number (3185952).

Almost surely, 2^61369428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61369428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76462848).

61369428 is an abundant number, since it is smaller than the sum of its proper divisors (91556268).

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

61369428 is a wasteful number, since it uses less digits than its factorization.

61369428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244 (or 5242 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 61369428 is about 7833.8641805944. The cubic root of 61369428 is about 394.4427928311.

The spelling of 61369428 in words is "sixty-one million, three hundred sixty-nine thousand, four hundred twenty-eight".