61278938 has 8 divisors (see below), whose sum is σ = 105049632. Its totient is φ = 26262396.

The previous prime is 61278911. The next prime is 61278947. The reversal of 61278938 is 83987216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188520 + ... + 2188547.

It is an arithmetic number, because the mean of its divisors is an integer number (13131204).

Almost surely, 2^61278938 is an apocalyptic number.

61278938 is a deficient number, since it is larger than the sum of its proper divisors (43770694).

61278938 is a wasteful number, since it uses less digits than its factorization.

61278938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377076.

The product of its digits is 145152, while the sum is 44.

The square root of 61278938 is about 7828.0864839372. The cubic root of 61278938 is about 394.2488271645.

The spelling of 61278938 in words is "sixty-one million, two hundred seventy-eight thousand, nine hundred thirty-eight".