61287038 has 4 divisors (see below), whose sum is σ = 91930560. Its totient is φ = 30643518.

The previous prime is 61287011. The next prime is 61287053. The reversal of 61287038 is 83078216.

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

It is a super-2 number, since 2×61287038² = 7512202053626888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61286989 and 61287007.

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, 15321758 + ... + 15321761.

It is an arithmetic number, because the mean of its divisors is an integer number (22982640).

Almost surely, 2^61287038 is an apocalyptic number.

61287038 is a deficient number, since it is larger than the sum of its proper divisors (30643522).

61287038 is a wasteful number, since it uses less digits than its factorization.

61287038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30643521.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 61287038 is about 7828.6038346566. The cubic root of 61287038 is about 394.2661973241.

The spelling of 61287038 in words is "sixty-one million, two hundred eighty-seven thousand, thirty-eight".