61282740 has 48 divisors (see below), whose sum is σ = 175589568. Its totient is φ = 15961344.

The previous prime is 61282729. The next prime is 61282763. The reversal of 61282740 is 4728216.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 61282698 and 61282707.

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, 9297 + ... + 14456.

It is an arithmetic number, because the mean of its divisors is an integer number (3658116).

Almost surely, 2^61282740 is an apocalyptic number.

61282740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61282740 is an abundant number, since it is smaller than the sum of its proper divisors (114306828).

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

61282740 is a wasteful number, since it uses less digits than its factorization.

61282740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23808 (or 23806 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 61282740 is about 7828.3293236808. The cubic root of 61282740 is about 394.2569806078.

The spelling of 61282740 in words is "sixty-one million, two hundred eighty-two thousand, seven hundred forty".