61428572 has 6 divisors (see below), whose sum is σ = 107500008. Its totient is φ = 30714284.

The previous prime is 61428559. The next prime is 61428581. The reversal of 61428572 is 27582416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7678568 + ... + 7678575.

It is an arithmetic number, because the mean of its divisors is an integer number (17916668).

Almost surely, 2^61428572 is an apocalyptic number.

It is an amenable number.

61428572 is a deficient number, since it is larger than the sum of its proper divisors (46071436).

61428572 is a wasteful number, since it uses less digits than its factorization.

61428572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15357147 (or 15357145 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 61428572 is about 7837.6381646514. The cubic root of 61428572 is about 394.5694652096.

The spelling of 61428572 in words is "sixty-one million, four hundred twenty-eight thousand, five hundred seventy-two".