61209792 has 336 divisors, whose sum is σ = 228234240. Its totient is φ = 15261696.

The previous prime is 61209791. The next prime is 61209817. The reversal of 61209792 is 29790216.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61209791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1302313 + ... + 1302359.

Almost surely, 2^61209792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61209792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114117120).

61209792 is an abundant number, since it is smaller than the sum of its proper divisors (167024448).

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

61209792 is a wasteful number, since it uses less digits than its factorization.

61209792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 61209792 is about 7823.6687046423. The cubic root of 61209792 is about 394.1004837030.

It can be divided in two parts, 61209 and 792, that added together give a square (62001 = 249²).

The spelling of 61209792 in words is "sixty-one million, two hundred nine thousand, seven hundred ninety-two".