61029838 has 4 divisors (see below), whose sum is σ = 91544760. Its totient is φ = 30514918.

The previous prime is 61029823. The next prime is 61029877. The reversal of 61029838 is 83892016.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×61029838² = 7449282252612488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61029797 and 61029806.

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, 15257458 + ... + 15257461.

It is an arithmetic number, because the mean of its divisors is an integer number (22886190).

Almost surely, 2^61029838 is an apocalyptic number.

61029838 is a deficient number, since it is larger than the sum of its proper divisors (30514922).

61029838 is a wasteful number, since it uses less digits than its factorization.

61029838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30514921.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 61029838 is about 7812.1596245853. The cubic root of 61029838 is about 393.7138921118.

The spelling of 61029838 in words is "sixty-one million, twenty-nine thousand, eight hundred thirty-eight".